Merge pull request #35 from pluralsh/fix-gh-action

Fix gh action

Author: michaeljguarino

.github/workflows/cd.yaml

@@ -19,7 +19,7 @@ jobs:
       - run: PATH=$PATH:$GOPATH/bin make test
   publish-docker:
     name: Build and push agent container
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     needs: [test]
     permissions:
       contents: 'read'