Put tag_prefix in quotes for GitHub Action

Author: davegaeddert

action.yml

@@ -15,6 +15,6 @@ runs:
   using: docker
   image: Dockerfile
   args:
-    - --changelog ${{ inputs.changelog }} --tag-prefix '${{ inputs.tag_prefix }}'
+    - --changelog ${{ inputs.changelog }} --tag-prefix "${{ inputs.tag_prefix }}"
   env:
     GITHUB_TOKEN: ${{ inputs.github_token }}