⚡️ Speed up method Repository.is_git_repo by 72,270% (#2381)

Here is the optimized version of the `Repository` class.

Co-authored-by: codeflash-ai[bot] <148906541+codeflash-ai[bot]@users.noreply.github.com>
Co-authored-by: Brandon Hancock (bhancock_ai) <109994880+bhancockio@users.noreply.github.com>

src/crewai/cli/git.py

@@ -1,4 +1,5 @@
 import subprocess
+from functools import lru_cache
 
 
 class Repository:
@@ -35,6 +36,7 @@ class Repository:
             encoding="utf-8",
         ).strip()
 
+    @lru_cache(maxsize=None)
     def is_git_repo(self) -> bool:
         """Check if the current directory is a git repository."""
         try: