chore(django5): pin dependencies to prevent drift

Use compatible release operator (~=) to pin major.minor versions while
allowing patch updates:
- django~=5.2.7
- uvicorn[standard]~=0.38.0
- pytest~=8.4.2
- pytest-asyncio~=1.2.0
- pytest-django~=4.11.1
- httpx~=0.28.1

Prevents accidental behavior changes from minor version bumps while
still getting security patches.

Author: webjunkie

test_project_django5/pyproject.toml

@@ -3,13 +3,13 @@ name = "test-django5"
 version = "0.1.0"
 requires-python = ">=3.12"
 dependencies = [
-    "django>=5.0",
-    "uvicorn[standard]",
+    "django~=5.2.7",
+    "uvicorn[standard]~=0.38.0",
     "posthog",
-    "pytest>=8.0",
-    "pytest-asyncio>=0.23",
-    "pytest-django>=4.0",
-    "httpx>=0.27",
+    "pytest~=8.4.2",
+    "pytest-asyncio~=1.2.0",
+    "pytest-django~=4.11.1",
+    "httpx~=0.28.1",
 ]
 
 [tool.uv.sources]