feat(gentoo): disable 3005.1 instanced until failures resolved

While Salt is installed, pretty much every attempt at a command fails,
including simple things like the version report:

```
[ERROR   ] An un-handled exception was caught by Salt's global exception handler:
AttributeError: 'dict' object has no attribute 'select'
Traceback (most recent call last):
  File "/usr/lib/python-exec/python3.10/salt-call", line 10, in <module>
    salt_call()
  File "/usr/lib/python3.10/site-packages/salt/scripts.py", line 441, in salt_call
    client.run()
  File "/usr/lib/python3.10/site-packages/salt/cli/call.py", line 18, in run
    self.parse_args()
  File "/usr/lib/python3.10/site-packages/salt/utils/parsers.py", line 175, in parse_args
    self.print_versions_report()
  File "/usr/lib/python3.10/site-packages/salt/utils/parsers.py", line 251, in print_versions_report
    print("\n".join(version.versions_report()), file=file, flush=True)
  File "/usr/lib/python3.10/site-packages/salt/version.py", line 857, in versions_report
    ver_info = versions_information(
  File "/usr/lib/python3.10/site-packages/salt/version.py", line 847, in versions_information
    extensions_info = extensions_information()
  File "/usr/lib/python3.10/site-packages/salt/version.py", line 823, in extensions_information
    for entry_point in salt.utils.entrypoints.iter_entry_points("salt.loader"):
  File "/usr/lib/python3.10/site-packages/salt/utils/entrypoints.py", line 29, in _wrapped
    return f(*args, **kwargs)
  File "/usr/lib/python3.10/site-packages/salt/utils/entrypoints.py", line 51, in iter_entry_points
    for entry_point in entry_points.select(group=group):
AttributeError: 'dict' object has no attribute 'select'
```

.gitlab-ci.yml

@@ -322,10 +322,11 @@ fedo-35.0-3005.1-py3: {extends: '.build_image_failure_forbidden', variables: {DN
 
 # GENTOO
 # Available versions: https://packages.gentoo.org/packages/app-admin/salt
+# Disabled `3005.1` for the time being since it's broken and fails, even though it installs successfully (see commit message for error example)
 gent-late-master-py3: {extends: '.build_image_failure_permitted', variables: {DN: 'gentoo/stage3'        , DV: 'latest' , PI: 'emg', SIM: 'git'   , SV: 'master' , SVB: ''      , PV: '3', EP: ''}}
-gent-late-3005.1-py3: {extends: '.build_image_failure_permitted', variables: {DN: 'gentoo/stage3'        , DV: 'latest' , PI: 'emg', SIM: 'stable', SV: '3005.1' , SVB: ''      , PV: '3', EP: ''}}
+# gent-late-3005.1-py3: {extends: '.build_image_failure_permitted', variables: {DN: 'gentoo/stage3'        , DV: 'latest' , PI: 'emg', SIM: 'stable', SV: '3005.1' , SVB: ''      , PV: '3', EP: ''}}
 gent-sysd-master-py3: {extends: '.build_image_failure_permitted', variables: {DN: 'gentoo/stage3'        , DV: 'systemd', PI: 'emg', SIM: 'git'   , SV: 'master' , SVB: ''      , PV: '3', EP: ''}}
-gent-sysd-3005.1-py3: {extends: '.build_image_failure_permitted', variables: {DN: 'gentoo/stage3'        , DV: 'systemd', PI: 'emg', SIM: 'stable', SV: '3005.1' , SVB: ''      , PV: '3', EP: ''}}
+# gent-sysd-3005.1-py3: {extends: '.build_image_failure_permitted', variables: {DN: 'gentoo/stage3'        , DV: 'systemd', PI: 'emg', SIM: 'stable', SV: '3005.1' , SVB: ''      , PV: '3', EP: ''}}
 
 # OPENSUSE
 # For openSUSE, the bootstrap script only allows `latest` to be built using `stable`