fix: remove duplicate dependencies in package.json

Removed duplicate entries that were causing yarn.lock inconsistencies:

dependencies:
- libsignal (kept github:whiskeysockets/libsignal-node)
- lru-cache (kept ^11.2.6, removed ^11.1.0)
- music-metadata (kept ^11.12.0, removed ^11.7.0)

devDependencies:
- link-preview-js (kept ^4.0.0, removed ^3.0.0)
- lru-cache (kept ^11.2.6, removed ^11.1.0)
- open (kept ^11.0.0, removed ^8.4.2)

JSON spec keeps the last occurrence of duplicate keys, which was
causing Yarn to try reverting to older versions during CI installs.

https://claude.ai/code/session_015R3U3kiprQiNTTNNt31Sg6

yarn.lock

@@ -3103,14 +3103,9 @@ __metadata:
     jiti: "npm:^2.4.2"
     json: "npm:^11.0.0"
     libsignal: "github:whiskeysockets/libsignal-node"
-    link-preview-js: "npm:^3.0.0"
+    link-preview-js: "npm:^4.0.0"
     lru-cache: "npm:^11.2.6"
     music-metadata: "npm:^11.12.0"
-    open: "npm:^8.4.2"
-    libsignal: "https://github.com/whiskeysockets/libsignal-node.git"
-    link-preview-js: "npm:^4.0.0"
-    lru-cache: "npm:^11.1.0"
-    music-metadata: "npm:^11.7.0"
     open: "npm:^11.0.0"
     p-queue: "npm:^9.0.0"
     pino: "npm:^10.3.1"
@@ -6013,7 +6008,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"libsignal@https://github.com/whiskeysockets/libsignal-node.git":
+"libsignal@github:whiskeysockets/libsignal-node":
   version: 2.0.1
   resolution: "libsignal@https://github.com/whiskeysockets/libsignal-node.git#commit=1c30d7d7e76a3b0aa120b04dc6a26f5a12dccf67"
   dependencies: