chore: update dev dependencies to latest versions

Updated packages:
- eslint: ^9 → ^9.39.2 (kept on v9 for typescript-eslint compatibility)
- prettier: ^3.5.3 → ^3.8.1
- lru-cache: ^11.1.0 → ^11.2.6 (both dependencies and devDependencies)
- music-metadata: ^11.7.0 → ^11.12.0
- @typescript-eslint/eslint-plugin: ^8 → ^8.55.0
- @typescript-eslint/parser: ^8 → ^8.55.0

Note: ESLint 10.0.0 is not yet supported by typescript-eslint,
so we keep ESLint on the latest v9.x release.

✅ All tests pass
✅ Lint passes with no errors

https://claude.ai/code/session_015R3U3kiprQiNTTNNt31Sg6

package.json

@@ -46,8 +46,8 @@
     "async-mutex": "^0.5.0",
     "fflate": "^0.8.2",
     "libsignal": "github:whiskeysockets/libsignal-node",
-    "lru-cache": "^11.1.0",
-    "music-metadata": "^11.7.0",
+    "lru-cache": "^11.2.6",
+    "music-metadata": "^11.12.0",
     "p-queue": "^9.0.0",
     "pino": "^9.6",
     "prom-client": "^15.1.3",
@@ -61,13 +61,13 @@
     "@types/jest": "^30.0.0",
     "@types/node": "^20.9.0",
     "@types/ws": "^8.0.0",
-    "@typescript-eslint/eslint-plugin": "^8",
-    "@typescript-eslint/parser": "^8",
+    "@typescript-eslint/eslint-plugin": "^8.55.0",
+    "@typescript-eslint/parser": "^8.55.0",
     "@whiskeysockets/eslint-config": "^1.0.0",
     "conventional-changelog": "^7.1.1",
     "conventional-changelog-angular": "^8.0.0",
     "esbuild-register": "^3.6.0",
-    "eslint": "^9",
+    "eslint": "^9.39.2",
     "eslint-config-prettier": "^10.1.2",
     "eslint-plugin-prettier": "^5.4.0",
     "jest": "^30.0.5",
@@ -75,10 +75,10 @@
     "jiti": "^2.4.2",
     "json": "^11.0.0",
     "link-preview-js": "^3.0.0",
-    "lru-cache": "^11.1.0",
+    "lru-cache": "^11.2.6",
     "open": "^8.4.2",
     "pino-pretty": "^13.1.1",
-    "prettier": "^3.5.3",
+    "prettier": "^3.8.1",
     "protobufjs-cli": "^1.1.3",
     "release-it": "^15.10.3",
     "ts-jest": "^29.4.0",