deps(gui-ubuntupro): bump flutter_markdown in /gui/packages/ubuntupro

Bumps [flutter_markdown](https://github.com/flutter/packages/tree/main/packages) from 0.6.22+1 to 0.6.23.
- [Release notes](https://github.com/flutter/packages/releases)
- [Commits](https://github.com/flutter/packages/commits/flutter_markdown-v0.6.23/packages)

---
updated-dependencies:
- dependency-name: flutter_markdown
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

gui/packages/ubuntupro/pubspec.lock

@@ -12,9 +12,11 @@ packages:
   agentapi:
     dependency: "direct main"
     description:
-      path: "../../../agentapi/dart"
-      relative: true
-    source: path
+      path: "agentapi/dart"
+      ref: HEAD
+      resolved-ref: e42ea3c8b6eb3ed019d53270f56d9697de2aabe2
+      url: "https://github.com/canonical/ubuntu-pro-for-wsl"
+    source: git
     version: "0.0.1"
   analyzer:
     dependency: transitive
@@ -299,10 +301,10 @@ packages:
     dependency: "direct main"
     description:
       name: flutter_markdown
-      sha256: "31c12de79262b5431c5492e9c89948aa789158435f707d3519a7fdef6af28af7"
+      sha256: "04c4722cc36ec5af38acc38ece70d22d3c2123c61305d555750a091517bbe504"
       url: "https://pub.dev"
     source: hosted
-    version: "0.6.22+1"
+    version: "0.6.23"
   flutter_plugin_android_lifecycle:
     dependency: transitive
     description:
@@ -574,9 +576,11 @@ packages:
   p4w_ms_store:
     dependency: "direct main"
     description:
-      path: "../p4w_ms_store"
-      relative: true
-    source: path
+      path: "gui/packages/p4w_ms_store"
+      ref: HEAD
+      resolved-ref: e42ea3c8b6eb3ed019d53270f56d9697de2aabe2
+      url: "https://github.com/canonical/ubuntu-pro-for-wsl"
+    source: git
     version: "0.0.1"
   package_config:
     dependency: transitive

gui/packages/ubuntupro/pubspec.yaml

@@ -42,7 +42,7 @@ dependencies:
     sdk: flutter
   flutter_localizations:
     sdk: flutter
-  flutter_markdown: ^0.6.19
+  flutter_markdown: ^0.6.23
   flutter_svg: ^2.0.10+1
   grpc: ^3.2.4
   intl: ^0.18.1