ci: build and test with Go 1.23 (#871)

This PR makes the CI pipeline use Go 1.23 for building and testing. Only
setting the `toolchain` in `go.mod` is not enough, because the [setup-go
action does not support the `toolchain` directive
yet](actions/setup-go#457), we have to set the
Go version to 1.23 in all setup-go CI steps manually.
We could also set the `go` version in `go.mod` to 1.23 since we do not
have any dependents, but that would be misusing the `go` directive,
since it is only intended to specify the minimum supported language
version of the project.

.github/workflows/build.yml

@@ -5,6 +5,9 @@ on:
     branches: [main]
   pull_request:
 
+env:
+  GOTOOLCHAIN: local
+
 jobs:
   build:
     runs-on: ubuntu-latest
@@ -15,7 +18,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version-file: go.mod
+          go-version: "1.23"
 
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v6

.github/workflows/ci.yml

@@ -5,6 +5,9 @@ on:
     branches: [main]
   pull_request:
 
+env:
+  GOTOOLCHAIN: local
+
 jobs:
   lint:
     runs-on: ubuntu-latest
@@ -15,7 +18,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version-file: go.mod
+          go-version: "1.23"
 
       - name: Run gofmt
         run: diff -u <(echo -n) <(gofmt -d -s .)
@@ -37,7 +40,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version-file: go.mod
+          go-version: "1.23"
 
       - name: Run tests
         run: go test -coverpkg=./... -coverprofile=coverage.txt -v -race ./...
@@ -59,7 +62,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version-file: go.mod
+          go-version: "1.23"
 
       - name: Delete old generated files
         run: find . -name 'zz_*.go' -delete
@@ -82,7 +85,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version-file: go.mod
+          go-version: "1.23"
 
       - name: Run go mod tidy
         run: go mod tidy

.github/workflows/release.yml

@@ -5,6 +5,9 @@ on:
     tags:
       - "v*.*.*"
 
+env:
+  GOTOOLCHAIN: local
+
 jobs:
   release:
     runs-on: ubuntu-latest
@@ -15,7 +18,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version-file: go.mod
+          go-version: "1.23"
 
       - name: Setup rcodesign
         uses: hashicorp/action-setup-rcodesign@v1

.gitlab-ci.yml

@@ -18,7 +18,7 @@ cache:
 
 build:
   stage: build
-  image: golang:1.21
+  image: golang:1.23
   script:
     - go env
     - go mod download
@@ -31,21 +31,21 @@ test:lint:
 
 test:tidy:
   stage: test
-  image: golang:1.21
+  image: golang:1.23
   script:
     - go mod tidy -v
     - git diff --exit-code
 
 test:generate:
   stage: test
-  image: golang:1.21
+  image: golang:1.23
   script:
     - go generate ./...
     - git diff --exit-code
 
 test:unit:
   stage: test
-  image: golang:1.21
+  image: golang:1.23
   script:
     - go test -v -coverpkg=./... -coverprofile=coverage.txt -covermode count ./...
     - go get github.com/boumenot/gocover-cobertura

go.mod

@@ -2,6 +2,8 @@ module github.com/hetznercloud/cli
 
 go 1.21
 
+toolchain go1.23.1
+
 require (
 	github.com/BurntSushi/toml v1.4.0
 	github.com/boumenot/gocover-cobertura v1.2.0