[PR #12064/9cba458e backport][stable-12] cargo: fix version parsing when state=latest (#12069)

cargo: fix version parsing when `state=latest` (#12064)

* fix(cargo): fix greedy regex in get_latest_published_version

Fixes #8949

* docs(cargo): add changelog fragment for #12064

(cherry picked from commit 9cba458e3e)

Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>

changelogs/fragments/12064-cargo-latest-version-regex.yml

@@ -0,0 +1,4 @@
+bugfixes:
+  - "cargo - fix ``state=latest`` always reporting ``changed`` due to greedy regex capturing description text instead of version string
+    (https://github.com/ansible-collections/community.general/issues/8949,
+    https://github.com/ansible-collections/community.general/pull/12064)."

plugins/modules/cargo.py

@@ -196,7 +196,7 @@ class Cargo:
         cmd = ["search", name, "--limit", "1"]
         data, dummy = self._exec(cmd, True, False, False)
 
-        match = re.search(r'"(.+)"', data)
+        match = re.search(r"^" + re.escape(name) + r'\s*=\s*"([^"]+)"', data, re.MULTILINE)
         if not match:
             self.module.fail_json(msg=f"No published version for package {name} found")
         return match.group(1)