chore(ci): remove Go versions below 1.24 from CI matrix

Remove CI test runs for Go 1.21.x, 1.22.x, and 1.23.x as the minimum
supported version is 1.24.0 (as defined in go.mod).

This change:
- Removes outdated Go versions from the test matrix
- Aligns CI testing with the minimum supported version
- Reduces CI execution time by removing unnecessary test runs
- Maintains testing coverage for supported versions (1.24.x, 1.25.x)

fix(ci): remove impossible dependencies from docker job

The docker job runs on push events to master/develop branches, but it
was depending on docker-test and dependency-review jobs which only run
on pull_request events. This created an impossible dependency chain
that prevented the docker job from ever running.

This change:
- Removes docker-test and dependency-review from docker job dependencies
- Keeps only the test job as a dependency (which runs on both events)
- Allows docker build & push to run correctly on push events
- Maintains PR-specific checks (docker-test, dependency-review) for PRs

Author: claude

.github/workflows/ci.yml

@@ -38,9 +38,6 @@ jobs:
     strategy:
       matrix:
         go:
-          - 1.21.x
-          - 1.22.x
-          - 1.23.x
           - 1.24.x
           - 1.25.x
 
@@ -357,7 +354,7 @@ jobs:
     permissions:
       contents: read
       packages: write
-    needs: [test, docker-test, dependency-review]
+    needs: [test]
     if: |
       github.event_name == 'push' && (github.ref == 'refs/heads/master' ||
       github.ref == 'refs/heads/develop' ||