chore: fix test workflow

Signed-off-by: Tiago Teixeira <[email protected]>

.github/workflows/test.yml

@@ -10,7 +10,7 @@ on:
 jobs:
   tests-run:
     name: 'Run Unit Tests'
-    if: '!contains(github.event.head_commit.message, "[skip ci]")'
+    if: "!contains(github.event.head_commit.message, '[skip ci]')"
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3