Drop support for rpi-bullseye

Author: Matevz Morato

.github/workflows/main.yml

@@ -136,7 +136,7 @@ jobs:
     needs: build-docstrings
     strategy:
       matrix:
-        rpi-os: [rpi-bullseye, rpi-bookworm]
+        rpi-os: [rpi-bookworm]
     runs-on: ${{ matrix.rpi-os }}
     steps:
       - name: Print home directory