chore(registry-pins): cascade socket-registry pins → c4b120c3

- 1 registry pins rewritten across 1 workflow files.
- .config/socket-registry-pins.json bumped to c4b120c3.
- Source: socket-registry@c4b120c34fa95a9974ffb3f407fa58f4d167c844.

Author: jdalton

.config/socket-registry-pins.json

@@ -21,4 +21,4 @@ concurrency:
 jobs:
   ci:
     name: Run CI Pipeline
-    uses: SocketDev/socket-registry/.github/workflows/ci.yml@f09a1cd39868ae45d304cfcead2d4f19a5325d8a # main (2026-05-15)
+    uses: SocketDev/socket-registry/.github/workflows/ci.yml@c4b120c34fa95a9974ffb3f407fa58f4d167c844 # main (2026-05-15)