fix github actions linter error (#275)

fix is based on this comment: golangci/golangci-lint-action#442 (comment)

Author: gabriel-vasile

.github/workflows/go.yml

@@ -7,6 +7,9 @@ on:
 name: run tests
 jobs:
   lint:
+    strategy:
+      matrix:
+        go-version: ["1.18.x"]
     runs-on: ubuntu-latest
     steps:
     - name: Install Go
@@ -19,11 +22,12 @@ jobs:
       uses: golangci/[email protected]
       with:
         version: "v1.37.1"
+        go-version: ${{ matrix.go-version }}
 
   test:
     strategy:
       matrix:
-        go-version: ["1.12.0", "^1.17.6"]
+        go-version: ["1.12.0", "1.18.x"]
         platform: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.platform }}
     steps: