Try using object syntax not literal syntax for js regex

Author: stephenhand

.github/workflows/release-package.yml

@@ -37,7 +37,8 @@ jobs:
         uses: actions/github-script@v4
         id: extract-version
         with:
-          script: return /refs\/tags\/servirtium\.core\/v(.+)/.exec(github.ref)[1]
+          script: |
+            return new RegExp("refs\\/tags\\/servirtium\\.core\\/v(.+)").exec(github.ref)[1]
       - name: Dump steps context
         env:
           STEPS_CONTEXT: ${{ toJSON(steps) }}