chore: remove bumping cosign in go.mod when updating bootstrap tools

[westonsteimel]

Since cosign is no longer a direct dependency of syft, no need to bump it in the go.mod file as part of the bootstrap tools auto-update workflow

[github-actions]

Benchmark Test Results

Benchmark results from the latest changes vs base branch

name                                                       old time/op    new time/op    delta
ImagePackageCatalogers/alpmdb-cataloger-2                    13.4ms ± 7%    15.9ms ± 3%  +18.29%  (p=0.008 n=5+5)
ImagePackageCatalogers/ruby-gemspec-cataloger-2              1.41ms ± 1%    1.86ms ±13%  +32.08%  (p=0.008 n=5+5)
ImagePackageCatalogers/python-package-cataloger-2            3.64ms ± 1%    4.51ms ± 2%  +23.67%  (p=0.008 n=5+5)
ImagePackageCatalogers/php-composer-installed-cataloger-2    1.17ms ± 0%    1.46ms ± 1%  +24.52%  (p=0.008 n=5+5)
ImagePackageCatalogers/javascript-package-cataloger-2         857µs ± 1%    1054µs ± 5%  +23.01%  (p=0.008 n=5+5)
ImagePackageCatalogers/dpkgdb-cataloger-2                     974µs ± 0%    1194µs ± 2%  +22.57%  (p=0.008 n=5+5)
ImagePackageCatalogers/rpm-db-cataloger-2                    1.43ms ± 1%    1.71ms ± 2%  +19.76%  (p=0.008 n=5+5)
ImagePackageCatalogers/java-cataloger-2                      16.0ms ± 1%    18.5ms ± 1%  +15.57%  (p=0.008 n=5+5)
ImagePackageCatalogers/graalvm-native-image-cataloger-2      7.76µs ± 3%    9.83µs ± 3%  +26.78%  (p=0.008 n=5+5)
ImagePackageCatalogers/apkdb-cataloger-2                      963µs ± 0%    1194µs ± 2%  +24.07%  (p=0.008 n=5+5)
ImagePackageCatalogers/go-module-binary-cataloger-2          15.8µs ± 1%    19.4µs ± 1%  +23.14%  (p=0.008 n=5+5)
ImagePackageCatalogers/dotnet-deps-cataloger-2               1.53ms ± 2%    1.82ms ± 1%  +18.84%  (p=0.008 n=5+5)
ImagePackageCatalogers/portage-cataloger-2                    808µs ± 0%    1017µs ± 2%  +25.80%  (p=0.008 n=5+5)
ImagePackageCatalogers/sbom-cataloger-2                      4.80ms ± 1%    5.88ms ± 3%  +22.34%  (p=0.008 n=5+5)
ImagePackageCatalogers/binary-cataloger-2                    6.31ms ± 0%    7.64ms ± 3%  +20.98%  (p=0.008 n=5+5)

name                                                       old alloc/op   new alloc/op   delta
ImagePackageCatalogers/alpmdb-cataloger-2                    5.29MB ± 0%    5.29MB ± 0%   +0.01%  (p=0.032 n=5+4)
ImagePackageCatalogers/ruby-gemspec-cataloger-2               209kB ± 0%     209kB ± 0%     ~     (p=0.690 n=5+5)
ImagePackageCatalogers/python-package-cataloger-2             975kB ± 0%     976kB ± 0%     ~     (p=0.151 n=5+5)
ImagePackageCatalogers/php-composer-installed-cataloger-2     222kB ± 0%     222kB ± 0%     ~     (p=0.421 n=5+5)
ImagePackageCatalogers/javascript-package-cataloger-2         161kB ± 0%     161kB ± 0%     ~     (p=0.151 n=5+5)
ImagePackageCatalogers/dpkgdb-cataloger-2                     205kB ± 0%     204kB ± 0%     ~     (p=0.151 n=5+5)
ImagePackageCatalogers/rpm-db-cataloger-2                     306kB ± 0%     306kB ± 0%     ~     (p=0.548 n=5+5)
ImagePackageCatalogers/java-cataloger-2                      3.53MB ± 0%    3.53MB ± 0%     ~     (p=0.690 n=5+5)
ImagePackageCatalogers/graalvm-native-image-cataloger-2      1.41kB ± 0%    1.41kB ± 0%     ~     (all equal)
ImagePackageCatalogers/apkdb-cataloger-2                      186kB ± 0%     186kB ± 0%   -0.06%  (p=0.032 n=5+5)
ImagePackageCatalogers/go-module-binary-cataloger-2          1.85kB ± 0%    1.85kB ± 0%     ~     (all equal)
ImagePackageCatalogers/dotnet-deps-cataloger-2                384kB ± 0%     385kB ± 0%   +0.18%  (p=0.008 n=5+5)
ImagePackageCatalogers/portage-cataloger-2                    141kB ± 0%     141kB ± 0%     ~     (p=0.690 n=5+5)
ImagePackageCatalogers/sbom-cataloger-2                       742kB ± 0%     742kB ± 0%   +0.02%  (p=0.008 n=5+5)
ImagePackageCatalogers/binary-cataloger-2                    1.01MB ± 0%    1.01MB ± 0%   -0.02%  (p=0.008 n=5+5)

name                                                       old allocs/op  new allocs/op  delta
ImagePackageCatalogers/alpmdb-cataloger-2                     85.8k ± 0%     85.8k ± 0%     ~     (p=0.095 n=4+5)
ImagePackageCatalogers/ruby-gemspec-cataloger-2               4.35k ± 0%     4.35k ± 0%     ~     (all equal)
ImagePackageCatalogers/python-package-cataloger-2             16.8k ± 0%     16.8k ± 0%     ~     (p=0.421 n=5+5)
ImagePackageCatalogers/php-composer-installed-cataloger-2     5.61k ± 0%     5.61k ± 0%     ~     (p=0.095 n=5+4)
ImagePackageCatalogers/javascript-package-cataloger-2         3.43k ± 0%     3.43k ± 0%     ~     (all equal)
ImagePackageCatalogers/dpkgdb-cataloger-2                     4.57k ± 0%     4.57k ± 0%     ~     (all equal)
ImagePackageCatalogers/rpm-db-cataloger-2                     8.30k ± 0%     8.30k ± 0%     ~     (all equal)
ImagePackageCatalogers/java-cataloger-2                       58.3k ± 0%     58.3k ± 0%     ~     (p=0.595 n=5+5)
ImagePackageCatalogers/graalvm-native-image-cataloger-2        32.0 ± 0%      32.0 ± 0%     ~     (all equal)
ImagePackageCatalogers/apkdb-cataloger-2                      5.33k ± 0%     5.33k ± 0%     ~     (p=0.571 n=4+5)
ImagePackageCatalogers/go-module-binary-cataloger-2            55.0 ± 0%      55.0 ± 0%     ~     (all equal)
ImagePackageCatalogers/dotnet-deps-cataloger-2                7.23k ± 0%     7.23k ± 0%     ~     (all equal)
ImagePackageCatalogers/portage-cataloger-2                    3.68k ± 0%     3.68k ± 0%     ~     (all equal)
ImagePackageCatalogers/sbom-cataloger-2                       25.3k ± 0%     25.3k ± 0%     ~     (all equal)
ImagePackageCatalogers/binary-cataloger-2                     34.5k ± 0%     34.5k ± 0%     ~     (all equal)