chore(ci): don't fail all test image update jobs if one fails

Author: scop

.github/workflows/update-docker-images.yml

@@ -22,6 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.repository_owner == 'scop' && github.ref == 'refs/heads/main'
     strategy:
+      fail-fast: false
       matrix:
         include:
           - dist: alpine