Fix lint warnings and update dependencies

Replace `as any` casts with `as unknown as Redis` in test mocks to
satisfy biome's noExplicitAny rule. Bump biome schema to 2.4.7 and
update package versions.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: joined

biome.json

@@ -1,5 +1,5 @@
 {
-    "$schema": "https://biomejs.dev/schemas/2.4.4/schema.json",
+    "$schema": "https://biomejs.dev/schemas/2.4.7/schema.json",
     "assist": {
         "actions": {
             "source": {