Bump to go1.17 (#553)

.github/workflows/gofmt.yml

@@ -14,21 +14,21 @@ jobs:
     runs-on: ubuntu-latest
     steps:
 
-    - name: Set up Go 1.16
-      uses: actions/setup-go@v1
+    - name: Set up Go 1.17
+      uses: actions/setup-go@v2
       with:
-        go-version: 1.16
+        go-version: 1.17
       id: go
 
     - name: Check out code into the Go module directory
-      uses: actions/checkout@v1
+      uses: actions/checkout@v2
 
-    - uses: actions/cache@v1
+    - uses: actions/cache@v2
       with:
         path: ~/go/pkg/mod
-        key: ${{ runner.os }}-gofmt1.16-${{ hashFiles('**/go.sum') }}
+        key: ${{ runner.os }}-gofmt1.17-${{ hashFiles('**/go.sum') }}
         restore-keys: |
-          ${{ runner.os }}-gofmt1.16-
+          ${{ runner.os }}-gofmt1.17-
 
     - name: Install goimports
       run: |