feat(actions): add repo variable update

Co-Authored-By: Virgil <virgil@lethean.io>

actions.go

@@ -71,6 +71,12 @@ func (s *ActionsService) CreateRepoVariable(ctx context.Context, owner, repo, na
 	return s.client.Post(ctx, path, body, nil)
 }
 
+// UpdateRepoVariable updates an existing action variable in a repository.
+func (s *ActionsService) UpdateRepoVariable(ctx context.Context, owner, repo, name string, opts *types.UpdateVariableOption) error {
+	path := ResolvePath("/api/v1/repos/{owner}/{repo}/actions/variables/{name}", pathParams("owner", owner, "repo", repo, "name", name))
+	return s.client.Put(ctx, path, opts, nil)
+}
+
 // DeleteRepoVariable removes an action variable from a repository.
 func (s *ActionsService) DeleteRepoVariable(ctx context.Context, owner, repo, name string) error {
 	path := ResolvePath("/api/v1/repos/{owner}/{repo}/actions/variables/{name}", pathParams("owner", owner, "repo", repo, "name", name))

actions_test.go

@@ -141,6 +141,38 @@ func TestActionsService_CreateRepoVariable_Good(t *testing.T) {
 	}
 }
 
+func TestActionsService_UpdateRepoVariable_Good(t *testing.T) {
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodPut {
+			t.Errorf("expected PUT, got %s", r.Method)
+		}
+		if r.URL.Path != "/api/v1/repos/core/go-forge/actions/variables/CI_ENV" {
+			t.Errorf("wrong path: %s", r.URL.Path)
+		}
+		var body types.UpdateVariableOption
+		if err := json.NewDecoder(r.Body).Decode(&body); err != nil {
+			t.Fatal(err)
+		}
+		if body.Name != "CI_ENV_NEW" {
+			t.Errorf("got name=%q, want %q", body.Name, "CI_ENV_NEW")
+		}
+		if body.Value != "production" {
+			t.Errorf("got value=%q, want %q", body.Value, "production")
+		}
+		w.WriteHeader(http.StatusNoContent)
+	}))
+	defer srv.Close()
+
+	f := NewForge(srv.URL, "tok")
+	err := f.Actions.UpdateRepoVariable(context.Background(), "core", "go-forge", "CI_ENV", &types.UpdateVariableOption{
+		Name:  "CI_ENV_NEW",
+		Value: "production",
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
 func TestActionsService_DeleteRepoVariable_Good(t *testing.T) {
 	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if r.Method != http.MethodDelete {