Restrict verifiers release tags to stable semver (#1528)

Author: xeophon

.github/workflows/publish-verifiers.yml

@@ -18,7 +18,7 @@ on:
     branches:
       - main
     tags:
-      - 'v[0-9]*'
+      - 'v[0-9]*.[0-9]*.[0-9]*'
       - '!v[0-9]*dev*'  # `.dev` tags are auto-versioning artifacts, not releases
 
 concurrency:
@@ -108,17 +108,10 @@ jobs:
             TAG="$PUSHED_REF"
           fi
 
-          case "$TAG" in
-            *dev*)
-              echo "Dev tags are auto-versioning artifacts, not stable releases (received '$TAG')" >&2
-              exit 1
-              ;;
-            v[0-9]*) ;;
-            *)
-              echo "Release tags must look like 'vX.Y.Z' (received '$TAG')" >&2
-              exit 1
-              ;;
-          esac
+          if [[ ! "$TAG" =~ ^v[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+            echo "Release tags must look like 'vX.Y.Z' (received '$TAG')" >&2
+            exit 1
+          fi
 
           echo "tag=$TAG" >> "$GITHUB_OUTPUT"