2026.07.21

What's Changed

• Builds: use filter=fully_trusted to avoid issues when un-tar doctools by @humitos in #13177
• Dependencies: all packages updated via pip-tools by @github-actions[bot] in #13184
• Build: don't remove attribute from build API response by @stsewd in #13190
• projects: allow slashes in subproject aliases by @ericholscher in #13007
• Builds: ephemeral builders with readthedocs-builder script by @humitos in #13133
• Update common/ to latest commit by @humitos in #13194
• Build: remove SCALE_IN_PROTECTION feature flag by @stsewd in #13187
• Build: remove unused signals by @stsewd in #13189
• Dependencies: all packages updated via pip-tools by @github-actions[bot] in #13199
• Bump actions/setup-python from 6.2.0 to 7.0.0 by @dependabot[bot] in #13200
• Build: don't rely on director to send notifications by @stsewd in #13198
• Build: don't rely on build dict for build id by @stsewd in #13196
• Builds: missing chunks of code to make isolated builders work by @humitos in #13195

Full Changelog: 2026.07.07...2026.07.21