fix: Temporarily pin event-model to fix CI (#1279)

Author: DiamondJoseph

pyproject.toml

@@ -33,6 +33,7 @@ dependencies = [
     "redis",
     "deepdiff",
     "scanspec>=0.7.3",
+    "event-model>=1.23",  # Until bluesky pins it https://github.com/DiamondLightSource/dodal/issues/1278
 ]
 
 dynamic = ["version"]

src/dodal/devices/i22/nxsas.py

@@ -38,7 +38,7 @@ def datakey(value) -> DataKey:
             if isinstance(value, tuple):
                 return {"units": value[1], **datakey(value[0])}
             dtype = "string"
-            shape = []
+            shape: list[int | None] = []
             match value:
                 case bool():
                     dtype = "boolean"