CodeCargo: update actions/checkout to v6.0.2

Updates all references to actions/checkout to version v6.0.2.

Author: nerycortez

.github/workflows/Specs.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout git
-        uses: actions/checkout@v1
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Install dependencies
         run: |