fix galaxy-release action (#29)

Author: rndmh3ro

.github/workflows/galaxy.yml

@@ -10,7 +10,7 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2.3.4
+      - uses: actions/checkout@v2
 
       # deploy the collection first, because if it fails, we don't want
       # to update the galaxy.yml
@@ -20,6 +20,11 @@ jobs:
           api_key: ${{ secrets.GALAXY_API_KEY }}
           galaxy_version: ${{ github.event.release.tag_name }}
 
+      # checkout master instead of the release-tag so we can push the galaxy.yml
+      - uses: actions/checkout@v2
+        with:
+          ref: master
+
       - name: update galaxy.yml with new version
         uses: microsoft/variable-substitution@v1
         with: