Slightly hacky usage of uv tool dir

dayamlchecker.checke_questions_urls isn't a binary, so isn't easily available when running `uv tool install`. But we can still directly source the venv uv creates for the tool and use it.

Author: BryceStevenWilley

da_build/action.yml

@@ -30,7 +30,9 @@ runs:
       shell: bash
 
     - name: Install dependencies
-      run: uv tool install "dayamlchecker>=1.2.0"
+      run: |
+          uv tool install "dayamlchecker>=1.2.0"
+          source $(uv tool dir)/bin/activate # necessary because dayamlchecker.check_questions_urls isn't a binary.
       shell: bash
 
     - name: Check syntax for all files