Fix can't parse VARIANT in verifier

Author: sunnamed434

.github/workflows/Verify.Redist.Update.yaml

@@ -27,7 +27,7 @@ jobs:
         run: |
           echo "🔍 Verifying redist update..."
 
-          VARIANT=$(echo "${GITHUB_HEAD_REF}" | cut -d'/' -f2 | cut -d'-' -f2-)
+          VARIANT=$(echo "${GITHUB_HEAD_REF}" | cut -d'/' -f2 | sed -E 's/-[0-9]{8}-[0-9]{6}$//')
           echo "Detected variant: $VARIANT"
 
           case "$VARIANT" in