Upgrade CI to Go 1.23, require Go 1.22+ (#80)

Author: VojtechVitek

.github/workflows/ci.yml

@@ -17,9 +17,10 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v3
         with:
-          go-version: "1.19"
+          go-version: "1.23"
 
       - name: Regenerate examples
         run: cd _examples && make generate
+
       - name: Git diff of regenerated files
         run: cd _examples && make diff

go.mod

@@ -1,3 +1,3 @@
 module github.com/webrpc/gen-golang
 
-go 1.16
+go 1.22