Fix click dependency constraint to be compatible with zenml

The current dependency constraint for Click (>=8.1.7) is incompatible
with zenml[server] which requires (>=8.0.1,<8.1.4). This change
relaxes crewAI's Click constraint to allow for compatibility with
zenml while maintaining functionality.

Fixes #2415

Co-Authored-By: Joe Moura <joao@crewai.com>

tests/cli/test_click_compatibility.py

@@ -0,0 +1,48 @@
+import subprocess
+import sys
+import tempfile
+
+import pytest
+
+
+def test_crewai_cli_works_with_compatible_click_version():
+    """Test that crewAI CLI works with Click version compatible with zenml."""
+    # Create a temporary virtual environment
+    with tempfile.TemporaryDirectory() as temp_dir:
+        # Create a new virtual environment
+        subprocess.run(
+            [sys.executable, "-m", "venv", f"{temp_dir}/venv"],
+            check=True,
+        )
+        
+        # Install Click 8.1.3 (compatible with zenml's constraints)
+        subprocess.run(
+            [f"{temp_dir}/venv/bin/pip", "install", "click==8.1.3"],
+            check=True,
+        )
+        
+        # Install crewai in development mode
+        subprocess.run(
+            [f"{temp_dir}/venv/bin/pip", "install", "-e", "."],
+            check=True,
+        )
+        
+        # Verify that the crewai CLI can be imported and run
+        result = subprocess.run(
+            [f"{temp_dir}/venv/bin/python", "-c", "from crewai.cli.cli import crewai; print('CLI import successful')"],
+            capture_output=True,
+            text=True,
+        )
+        
+        assert result.returncode == 0
+        assert "CLI import successful" in result.stdout
+        
+        # Test running a basic CLI command
+        result = subprocess.run(
+            [f"{temp_dir}/venv/bin/python", "-m", "crewai.cli.cli", "version"],
+            capture_output=True,
+            text=True,
+        )
+        
+        assert result.returncode == 0
+        assert "crewai version" in result.stdout