Update test-against-main.yml

Author: rerpha

.github/workflows/test-against-main.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        version: ['3.10','3.11'] # ,'3.12'] # also check on 3.12 once https://github.com/bluesky/ophyd-async/pull/478 is merged.
+        version: ['3.11', "3.12"]
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5