Fix go-licenser go.mod changes (#33)

* run go-licenser binary

Running `go run ...go-licenser` was updating the `go.mod` file too. This
was creating issues with the `go mod tidy` check in the CI.

Running the binary directly solve this issue, but require the binary to
be installed.

* ci: run go-licenser from binary

* update README

* fix

* fix2

Author: endorama

.github/workflows/pull-request.yaml

@@ -85,9 +85,8 @@ jobs:
         with:
           go-version: "${{steps.version.outputs.go}}"
 
-      - name: install go-licenser
-        run: "go get github.com/elastic/go-licenser"
-
       - name: check license
         # -d returns files without proper header
-        run: "go run github.com/elastic/go-licenser -license Elasticv2 -d"
+        run: |
+          GOBIN=$PWD/bin go install github.com/elastic/go-licenser@latest
+          ./bin/go-licenser -license Elasticv2 -d

Makefile

@@ -11,7 +11,7 @@ build:
 	go build -ldflags "$(VERSION_LDFLAGS)" -o elastic-agent-changelog-tool
 
 licenser:
-	go run github.com/elastic/go-licenser -license Elasticv2
+	go-licenser -license Elasticv2
 
 test:
 	go test -v ./...

README.md

@@ -4,3 +4,4 @@ Tooling to manage the changelog for beats, Elastic Agent and Fleet Server
 ## Requirements
 
 `git` CLI should be installed and available.
+[`go-licenser`](https://github.com/elastic/go-licenser) CLI should be installed and available.