[CI] Only single qoutes allowed.

Author: ViliusSutkus89

.github/workflows/build.yml

@@ -83,7 +83,7 @@ jobs:
 
   release:
     needs: cacheTarballs
-    if: github.ref == "refs/heads/master"
+    if: github.ref == 'refs/heads/master'
     runs-on: ubuntu-18.04
     steps:
       - uses: actions/checkout@v1