CI/GHA: pin codespell

This is to avoid breaking CI when a new version comes out.

Signed-off-by: Kir Kolyshkin <[email protected]>

Author: kolyshkin

.github/workflows/validate.yml

@@ -29,6 +29,7 @@ jobs:
     - uses: actions/checkout@v4
     - name: install deps
       # Version of codespell bundled with Ubuntu will become old, so use pip.
-      run: pip install --break-system-packages codespell
+      # OTOH, we want to pin it to specific version to avoid breaking CI.
+      run: pip install --break-system-packages codespell==v2.3.0
     - name: run codespell
       run: codespell