refactor: increase release notes caching to 55 min

lib/workers/pr/changelog/release-notes.js

@@ -208,7 +208,7 @@ async function addReleaseNotes(input) {
       if (!releaseNotes && v.compare.url) {
         releaseNotes = { url: v.compare.url };
       }
-      const cacheMinutes = 30;
+      const cacheMinutes = 55;
       await renovateCache.set(
         cacheNamespace,
         cacheKey,

lib/workers/pr/changelog/source-github.js

@@ -128,7 +128,7 @@ async function getChangeLogJSON({
         if (prevHead && nextHead) {
           release.compare.url = `${githubBaseURL}${repository}/compare/${prevHead}...${nextHead}`;
         }
-        const cacheMinutes = 30;
+        const cacheMinutes = 55;
         await renovateCache.set(
           cacheNamespace,
           getCacheKey(prev.version, next.version),