Upgrade CI Go to 1.24 and golangci-lint to v1.64.8

The go.mod files require go 1.24 (mandated by aws-sdk-go-v2@v1.41.5).
Update the lint workflow to use Go 1.24 and golangci-lint v1.64.8
(built with Go 1.24 support). Also bump setup-go action to v5.

Author: brmur

.github/workflows/lint-golang.yml

@@ -21,13 +21,13 @@ jobs:
         uses: tj-actions/changed-files@e9772d140489982e0e3704fea5ee93d536f1e275
         with:
           files: "gov2/**/*.go"
-      - uses: actions/setup-go@v3
+      - uses: actions/setup-go@v5
         if: steps.changed-files.outputs.any_changed == 'true'
         with:
-          go-version: 1.21
+          go-version: '1.24'
       - name: install golangci-lint
         if: steps.changed-files.outputs.any_changed == 'true'
-        run: curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.61.0
+        run: curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.64.8
       - name: run golangci-lint
         if: steps.changed-files.outputs.any_changed == 'true'
         run: |  # If you get a linting error of "File is not `goimports`-ed", the solution is to run "gofmt -w ./<folder>".