chore(deps): update actions/setup-go action to v6

Author: renovate[bot]

.github/workflows/release.yml

@@ -43,7 +43,7 @@ jobs:
     - name: Unshallow clone for tags
       run: git fetch --prune --unshallow --tags
     - name: Install Go
-      uses: actions/setup-go@v3
+      uses: actions/setup-go@v6
       with:
         go-version: ${{matrix.goversion}}
     - name: Install pulumictl
@@ -75,7 +75,7 @@ jobs:
         run: git fetch --prune --unshallow --tags
 
       - name: Install Go
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v6
         with:
           go-version: ${{ matrix.goversion }}