Migrate config .github/renovate.json5 (#1043)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/renovate.json5

@@ -6,7 +6,10 @@
   reviewers: [
     'team:data-postgresql',
   ],
-  "baseBranches": ["main", "/^*\\/edge$/"],
+  baseBranchPatterns: [
+    'main',
+    '/^*\\/edge$/',
+  ],
   packageRules: [
     {
       matchPackageNames: [
@@ -15,6 +18,5 @@
       allowedVersions: '<2.0.0',
     },
   ],
-  customManagers: [
-  ],
+  customManagers: [],
 }