update GH action (#15)

.github/workflows/test-lint-go.yml

@@ -1,42 +1,52 @@
 name: Go Lint and Unit Tests
 
-on:  
+on:
   push:
     branches:
       - main
   pull_request:
 
 jobs:
-  lint: 
+  lint:
     strategy:
       fail-fast: true
-      matrix: 
-        go: [ '1.14', '1.15', '1.16' ]
+      matrix:
+        go:
+          - '1.17'
+          - '1.18'
+
     runs-on: ubuntu-latest
+
     name: Lint Go ${{ matrix.go }}
     steps:
-    - uses: actions/checkout@v2
-    - name: Lint Go ${{ matrix.go }}
-      uses: actions/setup-go@v2
-      with:
-        go-version: ${{ matrix.go }}
-    - run: go version
-    - run: test -z $(gofmt -l .)
+      - uses: actions/checkout@v3
+      - name: Lint Go ${{ matrix.go }}
+        uses: actions/setup-go@v3
+        with:
+          go-version: ${{ matrix.go }}
+      - run: go version
+      - run: test -z $(gofmt -l .)
 
   build:
     strategy:
       fail-fast: false
       matrix:
-        os: [ ubuntu-latest, windows-latest ]
-        go: [ '1.14', '1.15', '1.16' ]
-    runs-on: ${{ matrix.os }} 
+        go:
+          - '1.17'
+          - '1.18'
+        os:
+          - 'ubuntu-latest'
+          - 'windows-latest'
+          - 'macos-latest'
+
+    runs-on: ${{ matrix.os }}
     name: Build and test Go ${{ matrix.go }} on ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v2
-    - name: Build and test Go ${{ matrix.go }} on ${{ matrix.os }} 
-      uses: actions/setup-go@v2
-      with:
-        go-version: ${{ matrix.go }}
-    - run: go version
-    - run: go build ./...
-    - run: go test ./...
+      - uses: actions/checkout@v3
+      - name: Build and test Go ${{ matrix.go }} on ${{ matrix.os }}
+        uses: actions/setup-go@v3
+        with:
+          go-version: ${{ matrix.go }}
+      - run: go version
+      - run: go build ./...
+      - run: go test ./...

go.mod

@@ -1,3 +1,3 @@
 module github.com/dynatrace-oss/dynatrace-metric-utils-go
 
-go 1.16
+go 1.17