bullseye upgrades, first batch

upgrade the following servers to Debian bullseye:

• archive-01 (@lavamind)
• build-x86-05 (@lavamind)
• build-x86-06 (@lavamind)
• chi-node-12 (@lavamind)
• chi-node-13 (@lavamind)
• chives (@lavamind)
• ci-runner-01 (@lavamind)
• ci-runner-arm64-02 (@lavamind)
• dangerzone-01 @anarcat
• hetzner-hel1-02 (@lavamind)
• hetzner-hel1-03 (@lavamind)
• hetzner-nbg1-01 @anarcat
• hetzner-nbg1-02 @anarcat
• loghost01 @anarcat
• media-01 (@kez)
• metrics-store-01 (@lavamind)
• perdulce (@lavamind)
• static-master-fsn (@lavamind)
• submit-01 @anarcat
• tb-build-01 @anarcat
• tb-build-03 (@lavamind)
• tb-tester-01 (@lavamind)
• tbb-nightlies-master (@kez)
• web-chi-03 (@lavamind)
• web-cymru-01 @anarcat
• web-fsn-01 @anarcat
• web-fsn-02 @anarcat

27 machines.