Pin GHA actions (#44)

Author: ErikSchierboom

.github/workflows/rubocop.yml

@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab
+        uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
 
       - name: Set up Ruby
         uses: ruby/setup-ruby@ec02537da5712d66d4d50a0f33b7eb52773b5ed1

.github/workflows/tests.yml

@@ -11,8 +11,8 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      # Checkout using GitHub's checkout action
-      - uses: actions/checkout@v2
+      - name: Checkout code
+        uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
 
       # Setup Ruby - this needs to match the version in the Gemfile
       - name: Set up Ruby