Use go-version-file instead of go-version (#179)

Author: wata727

.github/workflows/build.yml

@@ -23,6 +23,6 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v3
       with:
-        go-version: 1.19
+        go-version-file: 'go.mod'
     - name: Run test
       run: go test ./...

.github/workflows/lint.yml

@@ -17,7 +17,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v3
       with:
-        go-version: 1.19
+        go-version-file: 'go.mod'
     - name: Run linters
       run: |
         export PATH=$PATH:$(go env GOPATH)/bin