fix(deps): update ghcr.io/containerbase/base docker tag to v12

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/containerbase/base	final	major	11.11.29 -> 12.0.0

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Release Notes

containerbase/base (ghcr.io/containerbase/base)

v12.0.0

Compare Source

⚠ BREAKING CHANGES

• elixir and sbt are now need a prepare step for rootless install.
• User files and folders are now symlinked from /tmp/containerbase/cache to /home/ubuntu.
• the default user id is now 12021.
• nix: drop install support from hydra.nixos.org (#​3358)
• drop obsolete scripts (#​3073)
• flutter: drop install from source method (#​3319)
• php: drop getcomposer.org download support (#​3320)

Features

• coerce caches (#​3347) (ae9bbb9), closes #​2988
• nix: drop install support from hydra.nixos.org (#​3358) (82f4e88), closes #​3333
• support readonly fs (#​3036) (df0306f), closes #​2078
• switch default userid to 12021 (#​3351) (563c0d4), closes #​3277

Bug Fixes

• drop obsolete scripts (#​3073) (7ae4a7c), closes #​2744
• flutter: drop install from source method (#​3319) (bb9bae3), closes #​3063
• php: drop getcomposer.org download support (#​3320) (2b71800)

Tests

• deps: update dependency flux to v2.4.0 (#​3356) (ead0fda)

Miscellaneous Chores

• deps: update ghcr.io/containerbase/devcontainer docker tag to v11.11.29 (#​3360) (bdf1a17)

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[viceice]

TODO: update minimal build versions before