fix(astrolabe): update commitizen pattern to properly update info.xml version

The pattern 'version' was too broad and matched multiple lines:
- <?xml version="1.0"?>
- <version>0.2.1</version>
- min-version="30" max-version="32"

Changed to '<version>' to specifically match only the version tag.

Also fixed version mismatch: info.xml now correctly shows 0.3.0 to match
the version in .cz.toml and package.json.

third_party/astrolabe/.cz.toml

@@ -8,7 +8,7 @@ major_version_zero = true
 
 # Update Astrolabe-specific files only
 version_files = [
-    "appinfo/info.xml:version",
+    "appinfo/info.xml:<version>",
     "package.json:version"
 ]
 

third_party/astrolabe/appinfo/info.xml

@@ -29,7 +29,7 @@ Astrolabe connects to a semantic search service that understands the meaning of
 
 See [documentation](https://github.com/cbcoutinho/nextcloud-mcp-server) for configuration details.
 	]]></description>
-	<version>0.2.1</version>
+	<version>0.3.0</version>
 	<licence>agpl</licence>
 	<author homepage="https://github.com/cbcoutinho">Chris Coutinho</author>
 	<namespace>Astrolabe</namespace>