fix: add option for unlimited pagination

Set env variable RENOVATE_PAGINATE_ALL to disable Renovate’s regular limiting of 1000 results (unlimited results will be returned).

lib/platform/github/gh-got-wrapper.js

@@ -37,7 +37,11 @@ async function get(path, opts, retries = 5) {
     if (opts && opts.paginate) {
       // Check if result is paginated
       const linkHeader = parseLinkHeader(res.headers.link);
-      if (linkHeader && linkHeader.next && linkHeader.next.page !== '11') {
+      if (
+        linkHeader &&
+        linkHeader.next &&
+        (process.env.RENOVATE_PAGINATE_ALL || linkHeader.next.page !== '11')
+      ) {
         res.body = res.body.concat(
           (await get(linkHeader.next.url, opts, retries)).body
         );