Update GitHub Actions packages to resolve warnings in CI

This change updates actions/checkout to v4 and actions/setup-go to v5 to
resolve NodeJS 16 deprecation warnings in CI.

Signed-off-by: Austin Vazquez <[email protected]>

Author: austinvazquez

.github/workflows/docs-and-linting.yml

@@ -14,11 +14,11 @@ jobs:
     name: Documentation and Linting
     steps:
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           path: go/src/github.com/opencontainers/image-spec
 
-      - uses: actions/setup-go@v3
+      - uses: actions/setup-go@v5
         with:
           go-version: ${{ matrix.go }}