Bump go version to 1.16

Author: nkuba

.github/workflows/client.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v2
         with:
-          go-version: "1.13.x"
+          go-version: "1.16.x"
 
       - name: Run Go generators
         run: go generate ./.../gen
@@ -46,4 +46,4 @@ jobs:
       - uses: actions/checkout@v2
 
       - name: Lint Go
-        uses: keep-network/golint-action@v1.0.2
+        uses: keep-network/golint-action@v1.0.2

go.mod

@@ -1,6 +1,6 @@
 module github.com/keep-network/keep-common
 
-go 1.12
+go 1.16
 
 replace github.com/urfave/cli => github.com/keep-network/cli v1.20.0