Update CI workflows: add golangci-lint installation and upgrade checkout action to v4

Author: benc-uk

.github/workflows/ci-build.yml

@@ -37,6 +37,10 @@ jobs:
         with:
           go-version: "^1.24.0"
 
+      - name: "Install extra tools"
+        run: |
+          curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin
+
       - name: "Check code & lint"
         run: |
           go get ./...

.github/workflows/release-images.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: "Run all image builds"
         run: |