fix(datasource/github-tags): don't use github-releases for extra meta (#17650)

lib/modules/datasource/github-tags/index.spec.ts

 import { getPkgReleases } from '..';
 import * as httpMock from '../../../../test/http-mock';
 import * as _hostRules from '../../../util/host-rules';
-import { CacheableGithubReleases } from '../github-releases/cache';
 import { CacheableGithubTags } from './cache';
 import { GithubTagsDatasource } from '.';
 
@@ -12,10 +11,6 @@ const githubApiHost = 'https://api.github.com';
 const githubEnterpriseApiHost = 'https://git.enterprise.com';
 
 describe('modules/datasource/github-tags/index', () => {
-  const releasesCacheGetItems = jest.spyOn(
-    CacheableGithubReleases.prototype,
-    'getItems'
-  );
   const tagsCacheGetItems = jest.spyOn(
     CacheableGithubTags.prototype,
     'getItems'
@@ -109,10 +104,6 @@ describe('modules/datasource/github-tags/index', () => {
         { version: 'v1.0.0', releaseTimestamp: '2021-01-01', hash: '123' },
         { version: 'v2.0.0', releaseTimestamp: '2022-01-01', hash: 'abc' },
       ]);
-      releasesCacheGetItems.mockResolvedValueOnce([
-        { version: 'v1.0.0', releaseTimestamp: '2021-01-01', isStable: true },
-        { version: 'v2.0.0', releaseTimestamp: '2022-01-01', isStable: false },
-      ] as never);
 
       const res = await getPkgReleases({ datasource: github.id, depName });
 
@@ -123,7 +114,6 @@ describe('modules/datasource/github-tags/index', () => {
           {
             gitRef: 'v1.0.0',
             hash: '123',
-            isStable: true,
             releaseTimestamp: '2021-01-01T00:00:00.000Z',
             version: 'v1.0.0',
           },
@@ -131,7 +121,6 @@ describe('modules/datasource/github-tags/index', () => {
           {
             gitRef: 'v2.0.0',
             hash: 'abc',
-            isStable: false,
             releaseTimestamp: '2022-01-01T00:00:00.000Z',
             version: 'v2.0.0',
           },

lib/modules/datasource/github-tags/index.ts

@@ -2,12 +2,7 @@ import { logger } from '../../../logger';
 import { cache } from '../../../util/cache/package/decorator';
 import { GithubReleasesDatasource } from '../github-releases';
 import { getApiBaseUrl, getSourceUrl } from '../github-releases/common';
-import type {
-  DigestConfig,
-  GetReleasesConfig,
-  Release,
-  ReleaseResult,
-} from '../types';
+import type { DigestConfig, GetReleasesConfig, ReleaseResult } from '../types';
 import { CacheableGithubTags } from './cache';
 
 export class GithubTagsDatasource extends GithubReleasesDatasource {
@@ -88,28 +83,6 @@ export class GithubTagsDatasource extends GithubReleasesDatasource {
       releases: tagReleases.map((item) => ({ ...item, gitRef: item.version })),
     };
 
-    try {
-      // Fetch additional data from releases endpoint when possible
-      const releasesResult = await super.getReleases(config);
-      type PartialRelease = Omit<Release, 'version'>;
-
-      const releaseByVersion: Record<string, PartialRelease> = {};
-      releasesResult?.releases?.forEach((release) => {
-        const { version, ...value } = release;
-        releaseByVersion[version] = value;
-      });
-
-      const mergedReleases: Release[] = [];
-      tagsResult.releases.forEach((tag) => {
-        const release = releaseByVersion[tag.version];
-        mergedReleases.push({ ...release, ...tag });
-      });
-
-      tagsResult.releases = mergedReleases;
-    } catch (err) /* istanbul ignore next */ {
-      logger.debug({ err }, `Error fetching additional info for GitHub tags`);
-    }
-
     return tagsResult;
   }
 }