Update setup-go actions to use Go version from go.mod file (#49)

Author: zahiar

.github/workflows/linting.yml

@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v4
         with:
-          go-version: '1.17'
+          go-version-file: go.mod
 
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3.6.0

.github/workflows/release.yml

@@ -17,7 +17,7 @@ jobs:
 
       - uses: actions/setup-go@v4
         with:
-          go-version: '1.17'
+          go-version-file: go.mod
 
       - uses: crazy-max/ghaction-import-gpg@v5.3.0
         id: import_gpg

.github/workflows/testing.yml

@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v4
         with:
-          go-version: '1.17'
+          go-version-file: go.mod
 
       - name: Run unit tests
         run: make test
@@ -24,7 +24,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v4
         with:
-          go-version: '1.17'
+          go-version-file: go.mod
 
       - name: Run acceptance tests
         run: make testacc