ci: add prepublish script to own gpm.yaml

Author: mkloubert

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Change Log (go-package-manager)
 
-## 0.40.0
+## 0.40.1
 
 - **BREAKING CHANGE**: `publish` command now supports `publish`, `prepublish` and `postpublish` scripts in `gpm.yaml` file
 

gpm.yaml

@@ -30,6 +30,7 @@ files:
 scripts:
   docs: "go run . generate documentation ./docs"
   prebump: "go build ."
+  prepublish: "go build ."
   test: "exit 0"
   test1: "echo test1 runs on default environment"
   dev:test1: "echo test1 runs on 'dev' environment"