Use go 1.16 to support Apple silicon builds

Author: hmarr

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
     - name: Set up Go 1.x
       uses: actions/setup-go@v2
       with:
-        go-version: ^1.14
+        go-version: ^1.16
 
     - name: Check out code
       uses: actions/checkout@v2

.github/workflows/release.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.14
+          go-version: 1.16
 
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v2