Run static analysis, coverage and benchmarks only with the latest Go version

Author: aldas

.github/workflows/echo.yml

@@ -21,6 +21,10 @@ on:
       - 'codecov.yml'
   workflow_dispatch:
 
+env:
+  # run static analysis, coverage and benchmarks only with the latest Go version
+  LATEST_GO_VERSION: 1.19
+
 jobs:
   test:
     strategy:
@@ -47,23 +51,26 @@ jobs:
       - name: Run Tests
         run: go test -race --coverprofile=coverage.coverprofile --covermode=atomic ./...
 
-      - name: Install dependencies for checks
+      - name: Run golint
+        if: matrix.go == $LATEST_GO_VERSION
         run: |
           go install golang.org/x/lint/golint@latest
-          go install honnef.co/go/tools/cmd/staticcheck@latest
-          go install golang.org/x/vuln/cmd/govulncheck@latest
-
-      - name: Run golint
-        run: golint -set_exit_status ./...
+          golint -set_exit_status ./...
 
       - name: Run staticcheck
-        run: staticcheck ./...
+        if: matrix.go == $LATEST_GO_VERSION
+        run: |
+          go install honnef.co/go/tools/cmd/staticcheck@latest
+          staticcheck ./...
 
       - name: Run govulncheck
-        run: govulncheck ./...
+        if: matrix.go == $LATEST_GO_VERSION
+        run: |
+          go install golang.org/x/vuln/cmd/govulncheck@latest
+          govulncheck ./...
 
       - name: Upload coverage to Codecov
-        if: success() && matrix.go == 1.19 && matrix.os == 'ubuntu-latest'
+        if: success() && matrix.go == $LATEST_GO_VERSION && matrix.os == 'ubuntu-latest'
         uses: codecov/codecov-action@v3
         with:
           token:
@@ -73,7 +80,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        go: [1.19]
+        go: [$LATEST_GO_VERSION]
     name: Benchmark comparison ${{ matrix.os }} @ Go ${{ matrix.go }}
     runs-on: ${{ matrix.os }}
     steps: