Add Go package caching to GitHub Action (#26)

.github/workflows/gha-go-test.yaml

@@ -5,9 +5,9 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3 # Checks out the code
+      - uses: actions/checkout@v4 # Checks out the code
       - name: Setting Go up
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v4
         with:
           go-version: 1.21
       - name: Run staticcheck