renovate: allow TypeScript updates

The microsoft/TypeScript#50974 fix is included in TS 4.9 which is now released.

Author: glasser

renovate.json5

@@ -54,12 +54,6 @@
       "matchPackageNames": ["node-fetch", "@types/node-fetch"],
       "allowedVersions": "2.x"
     },
-    {
-      // We're uncomfortable running TS4.8 until this PR is released:
-      // https://github.com/microsoft/TypeScript/pull/50974 (it's not in 4.8.4).
-      matchPackageNames: ["typescript"],
-      allowedVersions: "4.7.x",
-    },
     {
       // Major upgrade rollup plugins along with rollup itself.
       matchSourceUrlPrefixes: ["https://github.com/rollup/"],