Flagger loadtester no updated release

[AshDerTest]

Describe the bug

I am using v1.22.0 of flagger and 0.22 of flagger loadtester. I noticed that the last update was done 5 months ago. Running this through a security scan highlights a bunch of vunerabilites (alpine, go, bash, etc) which have been updated in later versions.

I did see an update being done to the dockerfile but no official release of image to be used.

Would it be possible to update the versions of base images used and provide an newer release ?

Some of the errors picked up:

• | CVE | CVSS | PACKAGE | VERSION | STATUS

•  CVE-2022-32207 | 9.80 | curl | 7.80.0-r0 | fixed in 7.80.0-r2
  

• CVE-2022-28391 | 9.80 | busybox | 1.34.1-r3 | fixed in 1.34.1-r5
• CVE-2022-23806 | 9.10 | go | 1.17.2 | fixed in 1.17.7, 1.16.14
• CVE-2022-23806 | 9.10 | go | 1.16.10 | fixed in 1.17.7, 1.16.14
• CVE-2022-21235 | 9.00 | github.com/Masterminds/vcs | v1.13.1 | fixed in 1.13.2
• CVE-2022-22576 | 8.10 | curl | 7.80.0-r0 | fixed in 7.80.0-r1
• CVE-2022-28327 | 7.50 | go | 1.17.8 | fixed in 1.18.1, 1.17.9