chore: release 2025.9.20

[jdx]

📦 Registry

• use version_prefix for github backends by @risu729 in #6409
• fix hivemind by @mnm364 in #6431
• revert opam/k3kcli backends to ubi by @risu729 in #6406

🚀 Features

• (spm) add support for self-hosted and GitLab repositories by @roele in #6358
• add instructions for self-update by @jdx in #6433

🐛 Bug Fixes

• (doctor) exclude tools not supported on current os by @risu729 in #6422
• (json-schema) remove settings/additionalProperties by @tpansino in #6420
• (task) prevent hang when nested tasks fail by @jdx in #6430
• (ubi) filter versions with tag_regex before trimming v prefixes by @risu729 in #6421
• allow strip_archive_path_components to strip a dir containing the same filename by @risu729 in #6405

📦️ Dependency Updates

• update ghcr.io/jdx/mise:alpine docker digest to a64d8b4 by @renovate[bot] in #6426
• update actions/cache digest to 0057852 by @renovate[bot] in #6425
• update ghcr.io/jdx/mise:deb docker digest to af96f8e by @renovate[bot] in #6428
• update ghcr.io/jdx/mise:copr docker digest to 0f98c77 by @renovate[bot] in #6427

[Copilot]

Pull Request Overview

This PR bumps the version number from 2025.9.18 to 2025.9.19 for a new release. The changes include version updates across various configuration files and completions, along with changelog updates to document new features, bug fixes, and registry improvements.

• Update version number from 2025.9.18 to 2025.9.19 across all package files
• Add comprehensive changelog entry documenting registry fixes, new features, and bug fixes
• Update shell completion cache variables to reflect the new version

Reviewed Changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
packaging/rpm/mise.spec	Update RPM package version
default.nix	Update Nix package version
crates/aqua-registry/aqua-registry/pkgs/blopker/codebook/registry.yaml	Add new codebook registry configuration
completions/mise.fish	Update Fish shell completion cache variable
completions/mise.bash	Update Bash shell completion cache variable
completions/_mise	Update Zsh shell completion cache variable
README.md	Update version in example output
Cargo.toml	Update Rust package version
CHANGELOG.md	Add new release changelog entry

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[github-actions]

Hyperfine Performance

mise x -- echo

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2025.9.19 x -- echo	19.2 ± 0.3	18.7	22.1	1.00
mise x -- echo	19.3 ± 0.3	18.7	20.5	1.00 ± 0.02

mise env

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2025.9.19 env	18.5 ± 0.2	18.0	20.4	1.00
mise env	18.6 ± 0.3	18.0	21.8	1.00 ± 0.02

mise hook-env

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2025.9.19 hook-env	18.2 ± 0.3	17.7	20.3	1.00
mise hook-env	18.3 ± 0.3	17.7	20.0	1.00 ± 0.02

mise ls

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2025.9.19 ls	16.2 ± 0.2	15.7	17.4	1.00
mise ls	16.3 ± 0.2	15.8	17.1	1.01 ± 0.02

xtasks/test/perf

Command	mise-2025.9.19	mise	Variance
install (cached)	166ms	✅ 101ms	+64%
ls (cached)	62ms	61ms	+1%
bin-paths (cached)	68ms	68ms	+0%
task-ls (cached)	473ms	461ms	+2%

✅ Performance improvement: install cached is 64%