Update golang to 1.22

Author: miguno

.github/workflows/go.yml

@@ -22,7 +22,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v3
       with:
-        go-version: 1.19
+        go-version: 1.22
 
     - name: Build
       run: go build -trimpath -ldflags="-w -s -X 'main.Version=$PROJECT_VERSION'" -v ./...

README.md

@@ -16,7 +16,7 @@ Features:
   [multi-stage build setup](https://docs.docker.com/build/building/multi-stage/)
   to minimize the size of the generated Docker image, which is 5MB
 - Supports [Docker BuildKit](https://docs.docker.com/build/)
-- Golang 1.19
+- Golang 1.22
 - [GitHub Actions workflows](https://github.com/miguno/golang-docker-build-tutorial/actions) for
   [Golang](https://github.com/miguno/golang-docker-build-tutorial/actions/workflows/go.yml)
   and

go.mod

@@ -1,6 +1,6 @@
 module github.com/miguno/golang-docker-build-tutorial
 
-go 1.19
+go 1.22
 
 require (
 	github.com/gorilla/mux v1.8.1