Upgrade Go version from 1.19 to 1.20

Author: albertony

.github/workflows/build.yml

@@ -13,7 +13,8 @@ jobs:
         name: Setup go
         uses: actions/setup-go@v3
         with:
-          go-version: 1.19
+          # Note: Using "go-version: 1.20" incorrectly matches with go version 1.2 (see https://github.com/actions/setup-go/issues/326)
+          go-version: 1.20.*
           check-latest: true
 
       # Configure git to keep LF on Windows, since linters such as goimports assumes this.

go.mod

@@ -1,5 +1,5 @@
 module github.com/albertony/npiperelay
 
-go 1.19
+go 1.20
 
 require golang.org/x/sys v0.4.0