Update CI workflow to use latest actions and Go version

Author: benc-uk

.github/workflows/ci-build.yml

@@ -30,17 +30,12 @@ jobs:
 
     steps:
       - name: "Checkout source"
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: "Set Go version and paths"
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v5
         with:
-          go-version: "^1.21.0"
-
-      - name: "Install extra tools"
-        run: |
-          go install gotest.tools/gotestsum@latest
-          curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin
+          go-version: "^1.24.0"
 
       - name: "Check code & lint"
         run: |