feat: suppressNotifications=prValidation

Adds option to suppress PR validations by adding ‘prValidation’ to the ‘suppressNotifications’ array.

Workaround for #4061

lib/config/definitions.js

@@ -1819,6 +1819,7 @@ const options = [
       'artifactErrors',
       'deprecationWarningIssues',
       'onboardingClose',
+      'prValidation',
     ],
     cli: false,
     env: false,

lib/workers/repository/finalise/validate.js

@@ -17,6 +17,12 @@ async function getRenovateFiles(prNo) {
 }
 
 async function validatePrs(config) {
+  if (
+    config.suppressNotifications &&
+    config.suppressNotifications.includes('prValidation')
+  ) {
+    return;
+  }
   logger.setMeta({ repository: config.repository });
   logger.debug('branchPrefix: ' + config.branchPrefix);
   const renovatePrs = await getRenovatePrs(config.branchPrefix);

test/workers/repository/finalise/validate.spec.js

@@ -6,6 +6,9 @@ beforeEach(() => {
 
 describe('workers/repository/validate', () => {
   describe('validatePrs()', () => {
+    it('returns if disabled', async () => {
+      await validate.validatePrs({ suppressNotifications: ['prValidation'] });
+    });
     it('catches error', async () => {
       platform.getPrList.mockReturnValueOnce([
         {