feat!: default internalChecksFilter to strict (#18460)

BREAKING CHANGE: Default value for internalChecksFilter changes from none to strict

lib/config/options/index.ts

@@ -1486,7 +1486,7 @@ const options: RenovateOptions[] = [
     description: 'When and how to filter based on internal checks.',
     type: 'string',
     allowedValues: ['strict', 'flexible', 'none'],
-    default: 'none',
+    default: 'strict',
   },
   {
     name: 'prCreation',

lib/workers/repository/process/lookup/filter-checks.spec.ts

@@ -52,6 +52,7 @@ describe('workers/repository/process/lookup/filter-checks', () => {
 
   describe('.filterInternalChecks()', () => {
     it('returns latest release if internalChecksFilter=none', async () => {
+      config.internalChecksFilter = 'none';
       const res = await filterInternalChecks(
         config,
         versioning,