bump(qt-development-skills): 2be55aaf → 6e3411d7 (#3195)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

.claude-plugin/marketplace.json

@@ -2287,7 +2287,7 @@
       "source": {
         "source": "url",
         "url": "https://github.com/TheQtCompanyRnD/agent-skills.git",
-        "sha": "2be55aaf050cf0e5d92d62966c473d2c5f6d780a"
+        "sha": "6e3411d7e58965aa31fa3803c398511f27b29216"
       },
       "homepage": "https://www.qt.io/"
     },