Add Decoder v1.1.2 for LNbits v1.5.4+

Adds the latest Decoder extension release (v1.1.2) to the vetted
extensions registry. This version requires LNbits >= 1.5.4 and includes
updated lock files to patch Dependabot security alerts.

Archive hash verified: b834e292444d0115eda4c3954d7dcca467079f063fd392c4bed3ad12720e3891

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

Author: exe.dev user

extensions.json

@@ -129,6 +129,18 @@
             "hash": "a2be2ed53e95744dc1dc76b8810f9d1071cfe78c7d948a9a8b6d06be2762a627",
             "details_link": "https://raw.githubusercontent.com/bitkarrot/decoder/main/config.json"
         },
+        {
+            "id": "decoder",
+            "repo": "https://github.com/bitkarrot/decoder",
+            "name": "Decoder",
+            "min_lnbits_version": "1.5.4",
+            "version": "1.1.2",
+            "short_description": "Decode Lightning Network BOLT11, LNURL, and Lightning Address",
+            "icon": "https://raw.githubusercontent.com/bitkarrot/decoder/main/static/unlock.png",
+            "archive": "https://github.com/bitkarrot/decoder/archive/refs/tags/v1.1.2.zip",
+            "hash": "b834e292444d0115eda4c3954d7dcca467079f063fd392c4bed3ad12720e3891",
+            "details_link": "https://raw.githubusercontent.com/bitkarrot/decoder/main/config.json"
+        },
         {
             "id": "gerty",
             "repo": "https://github.com/lnbits/gerty",