.github: update CI action and its dependencies

Author: creachadair

.github/workflows/go-presubmit.yml

@@ -21,10 +21,10 @@ jobs:
         go-version: ['stable']
         os: ['ubuntu-latest']
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install Go ${{ matrix.go-version }}
-      uses: actions/setup-go@v3
+      uses: actions/setup-go@v4
       with:
         go-version: ${{ matrix.go-version }}
         cache: true
-    - uses: creachadair/go-presubmit-action@v1
+    - uses: creachadair/go-presubmit-action@v2