v15.4.0-canary.30

Core Changes

• Fix --no-mangling for "use cache" functions: #78993
• chore: update rspack to 1.3.9: #78984
• [not-found] Add global-not-found convention: #78783
• [not-found] support metadata exports of global-not-found: #78961

Misc Changes

• fix(CI): Wait for lock when running apt-get: #78979
• chore(CI): Add a few more turbopack paths to labeler config: #78980
• chore(CI): Add Rspack labeler config: #79004
• perf(turbopack): Remove needless clone of SWC AST: #79007

Credits

Huge thanks to @unstubbable, @bgw, @SyMind, @huozhi, and @kdy1 for helping!