Fix CI: go.mod version and simplify workflow

- Fix go.mod to use go 1.20 (minimum tested version)
- Remove benchmark job (requires special setup)
- Simplify staticcheck installation

Author: oliveagle

.github/workflows/ci.yml

@@ -35,6 +35,7 @@ jobs:
         run: go test -v ./...
 
       - name: Test with Coverage
+        if: matrix.go-version == '1.22'
         run: go test -coverprofile=coverage.out ./...
 
       - name: Upload Coverage
@@ -62,40 +63,12 @@ jobs:
       - name: Check formatting
         run: |
           if ! gofmt -d . | grep -q .; then
-            echo "Code is properly formatted"
-          else
             echo "Code needs formatting"
             gofmt -d .
             exit 1
           fi
 
-      - name: Install staticcheck
-        run: go install honnef.co/go/tools/cmd/staticcheck@latest
-
-      - name: Run staticcheck
-        run: staticcheck ./...
-
-  benchmark:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Set up Go
-        uses: actions/setup-go@v5
-        with:
-          go-version: '1.22'
-
-      - name: Run benchmarks
-        run: go test -bench=. -benchmem ./...
-
-      - name: Upload benchmark results
-        uses: benchmark-action/github-action-benchmark@v1
-        with:
-          name: Go Benchmark
-          tool: 'go'
-          output-file-path: bench.txt
-          github-pages: false
-          alert-threshold: '200%'
-          fail-on-alert: false
-        env:
-          BENCHMARK_FLAG: '-bench=. -benchmem'
+      - name: Install and run staticcheck
+        run: |
+          go install honnef.co/go/tools/cmd/staticcheck@latest
+          staticcheck ./...

go.mod

@@ -1,3 +1,3 @@
 module github.com/oliveagle/jsonpath
 
-go 1.25.5
+go 1.20