v39 planning

[HonkingGoose]

Describe the proposed change(s).

• Drop support for JSON5 parsing of .json files (see top comment in Consistent, predictable json/json5 handling #24554)

Copied from "old" v38 deferred list

Source: Deferred to future major list from issue #27992.

• Support git LFS #6842
• Enable config migration by default #16359 - blocked due to JSON5 migration
• Rename renovate/stability-days status check to renovate/minimum-release-age #21442 - blocked by renovateCompatibility (Major release backwards compatibility for hosted users #19980)
• feat!: update ubuntu to 24.04 containerbase/base#1991
• Merge gitlabci-include to gitlabci manager #21446
• feat(presets)!: drop renovate.json fallback #23910

Found by searching for v39 in PR list:

These two PRs depend on each other:

• feat(hex): use registry v2 for packages rather than hex.pm http API #29756
• feat(mix): Support private hex repos/registries #29775

Then we have this (closed) draft PR, which was added to the v39 milestone:

• feat(config)!: experimental flags #28187

Related issues

• v38 planning #27992
• v37 planning #23911
• v36 planning #21134