ci: github actions build without man-db trigger

Author: astraw

.github/workflows/build-strand-cam-offline-checkerboards.yml

@@ -19,6 +19,9 @@ jobs:
       - uses: actions/checkout@v4
       - name: install OpenCV
         run: |
+          # See https://github.com/actions/runner-images/issues/10977
+          echo 'set man-db/auto-update false' | sudo debconf-communicate >/dev/null
+          sudo dpkg-reconfigure man-db
           sudo apt-get update
           DEBIAN_FRONTEND=noninteractive sudo apt-get install -y libopencv-dev
       - name: Build app