fix: pr dep filter use manager in duplicate key

To ensure we list both nvm and engines when upgrading node

lib/workers/pr/index.js

@@ -102,9 +102,9 @@ async function ensurePr(prConfig) {
   }
   // Get changelog and then generate template strings
   for (const upgrade of upgrades) {
-    const upgradeKey = `${upgrade.depName}-${upgrade.changeLogFromVersion}-${
-      upgrade.changeLogToVersion
-    }`;
+    const upgradeKey = `${upgrade.depName}-${upgrade.manager}-${
+      upgrade.changeLogFromVersion
+    }-${upgrade.changeLogToVersion}`;
     if (processedUpgrades.indexOf(upgradeKey) !== -1) {
       continue; // eslint-disable-line no-continue
     }