deps: bump lib-core.maps 0.4.0 -> 0.5.0

Required by the schema-v3 work in lib-core.maps. The map-editor
v0.1 stays on the legacy tiles[] path and continues to function
unchanged through the auto-upgrade v1->v2->v3 chain on load.

Full migration to v3's vertex-painting + override-UI lands in the
map-editor v0.2 slice
(sporel-meta/docs/superpowers/plans/2026-05-28-map-editor-blob-v2.md).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

manifest.module

@@ -9,7 +9,7 @@
         "fa_terrain_v1": "lib-asset.prototype-fa-starter"
     },
     "deps": [
-        {"id":"lib-core.maps","version":"0.4.0"},
+        {"id":"lib-core.maps","version":"0.5.0"},
         {"id":"lib-core.render","version":"0.1.0"},
         {"id":"lib-core.camera","version":"0.3.0"},
         {"id":"lib-core.input","version":"0.4.0"},