Merge pull request #87 from OpenAssetIO/work/release-alpha-9

[Release] Bump version to alpha 9

Author: elliotcmorris

RELEASE_NOTES.md

@@ -1,6 +1,15 @@
 Release Notes
 =============
 
+v1.0.0-alpha.9
+---------------
+
+### Improvements
+
+- Update `openassetio-traitgen` to `v1.0.0a9`, which changes exceptions
+  in generated types to instead be handled via `std::optional`.
+  [#74](https://github.com/OpenAssetIO/OpenAssetIO-TraitGen/issues/74)
+
 v1.0.0-alpha.8
 ---------------
 

pyproject.toml

@@ -4,13 +4,13 @@
 [build-system]
 requires = [
     "setuptools>=65.5.0",
-    "openassetio-traitgen==1.0.0a7"
+    "openassetio-traitgen==1.0.0a9"
 ]
 build-backend = "setuptools.build_meta"
 
 [project]
 name = "openassetio-mediacreation"
-version = "1.0.0a8"
+version = "1.0.0a9"
 requires-python = ">=3.7"
 dependencies = ["openassetio>=1.0.0b2"]