buildbot: 1.1.1 -> 1.2.0, fix build

[lopsided98]

Motivation for this change

#41894 broke buildbot again by updating buildbot-pkg but not the rest of the packages. This PR fixes this by updating the rest of the packages to 1.2.0.

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nox --run "nox-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)
• Fits CONTRIBUTING.md.

---

[dotlambda]

@GrahamcOfBorg build buildbot buildbot-worker buildbot-pkg buildbot-ui buildbot-full

[GrahamcOfBorg]

Success on x86_64-linux (full log)

Attempted: buildbot, buildbot-worker, buildbot-pkg, buildbot-ui, buildbot-full

Partial log (click to expand)

buildbot.test.unit.test_www_endpointmatchers.ViewBuildsEndpointMatcherBranch.test_build
-------------------------------------------------------------------------------
Ran 5272 tests in 81.175s

PASSED (skips=237, successes=5035)
building '/nix/store/l54df0mfgyxb007i17ddgw1v5xk7m5yw-wrapped-buildbot-1.2.0.drv'...
building '/nix/store/yqpsvnmbxj1mx0xpbqgq338ypq5yjfff-wrapped-buildbot-1.2.0.drv'...
'/nix/store/zl17wkldwc2zn6r0cfnnmw7dvcapjhjj-wrapped-buildbot-1.2.0/lib' -> '/nix/store/9lhaj26ca9jjvsg4vjbjsm7kns4in2xm-buildbot-1.2.0/lib'
'/nix/store/gq6k54aqwb58xvx6zvxlnsrqha5cr6sv-wrapped-buildbot-1.2.0/lib' -> '/nix/store/9lhaj26ca9jjvsg4vjbjsm7kns4in2xm-buildbot-1.2.0/lib'

[GrahamcOfBorg]

Failure on aarch64-linux (full log)

Attempted: buildbot, buildbot-worker, buildbot-pkg, buildbot-ui, buildbot-full

Partial log (click to expand)

running=OS_STDOUT_CAPTURE=${OS_STDOUT_CAPTURE:-1} \
OS_STDERR_CAPTURE=${OS_STDERR_CAPTURE:-1} \
OS_TEST_TIMEOUT=${OS_TEST_TIMEOUT:-60} \
${PYTHON:-python} -m subunit.run discover -t ./ .  --load-list /build/tmp7xbbRB
Ran 165 tests in 161.371s
PASSED (id=0)
cannot build derivation '/nix/store/2qj1q97pglaafynkshnmhsxw453d81a7-buildbot-1.2.0.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/bbrcf5hwhissc7lvcqmn0nlyjy228f68-wrapped-buildbot-1.2.0.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/x2c05gk3qickrclcc5iqc8ys70in3hkr-wrapped-buildbot-1.2.0.drv': 1 dependencies couldn't be built
error: build of '/nix/store/2qj1q97pglaafynkshnmhsxw453d81a7-buildbot-1.2.0.drv', '/nix/store/bbrcf5hwhissc7lvcqmn0nlyjy228f68-wrapped-buildbot-1.2.0.drv', '/nix/store/cwgabggday3afy04mwmm9zxl5ggcvc21-buildbot-worker-1.2.0.drv', '/nix/store/x2c05gk3qickrclcc5iqc8ys70in3hkr-wrapped-buildbot-1.2.0.drv' failed