Update poetry:sync task for Poetry 2.0.0 CLI

Previously, it was necessary to add the `--no-update` flag to the `poetry lock` command in order to prevent it from
updating the dependency versions in the lockfile. The behavior of the command was changed to always behave that way, and
so the `--no-update` flag was removed from the command.

Author: per1234

Taskfile.yml

@@ -220,8 +220,7 @@ tasks:
       - |
         poetry \
           lock \
-            --no-cache \
-            --no-update
+            --no-cache
 
   poetry:validate:
     desc: Validate pyproject.toml