v19

 * scripts: signall: fix finish function not called when apk adbsign failed
 * scripts: signall: fix wrong sha256sum on apk packages.adb index
 * scripts: sha2rsync: add apk package index signature files
 * scripts: sha2rsync: fix missing feeds in additional_files list
 * buildworker: start: fix leaking BUILDWORKER_TLS env variable
 * scripts: signall: fix wrong GPG signature on apk packages.adb index
 * ci: use Python 3.11 from Debian 12 for testing
 * Bump buildbot to v3.11.8 release
 * ci: switch to main branch
 * docker: buildworker: add missing file package
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