Pin dependencies to known working versions

- Closes #270
- Dodal and our pinned version of typing_extensions both conflict with Pydantic 2.0
- Pins FastAPI to 0.99: supports OpenAPI 3.1 while using Pydantic 1.0
- Pin Bluesky to 1.10 prior to AreaDetector staging change
- Pin ScanSpec to version compatible with Pydantic and FastAPI
- Pin Click to version compatible with mypy type checking

pyproject.toml

@@ -19,10 +19,10 @@ dependencies = [
     "pyepics",
     "pydantic<2.0",
     "stomp.py",
-    "scanspec>0.6.1",
+    "scanspec==0.6.3",
     "PyYAML",
-    "click",
-    "fastapi[all]<0.100",
+    "click==8.1.3",
+    "fastapi[all]==0.99",
     "uvicorn",
     "requests",
     "dodal @ git+https://github.com/DiamondLightSource/[email protected]",