4.4.1

What's Changed

• Revert "Revert "github_runner_matrix: enable usage of macos-15 runners"" by @carlocab in #18437
• github/workflows: use macos-15 GitHub Actions runners. by @MikeMcQuaid in #18462
• dev-cmd/bump: fix comparison of versions with comma-separated values by @khipp in #18480
• linkage_checker: replace Fiddle.dlopen with libSystem call by @carlocab in #18486
• unpack_strategy/directory: try preserving hardlinks by @cho-m in #18497
• attestion: make InvalidAttestationError non-fatal in CI by @carlocab in #18485
• brew.sh: fix some stderr redirections to /dev/null by @carlocab in #18503
• upstream.rbi: remove Fiddle constants by @carlocab in #18502
• Move remaining undef use in OS extensions to prepend by @dduugg in #18378
• Bump more files to Sorbet typed: strict by @issyl0 in #18354
• Add a Delegator DSL compiler by @dduugg in #18520
• Use requires_ancestor consistently by @dduugg in #18521
• Replace removed constants with overridable methods by @dduugg in #18517
• Remove removable constants by @dduugg in #18528
• utils/curl: workaround curl bug for --head --request GET by @cho-m in #18508
• attestation: show unit of time for retry message by @carlocab in #18539
• attestation: specialize error on incompatible gh by @woodruffw in #18543
• tap_auditor: check formulae names in autobump.txt by @cho-m in #18541
• os/mac/pkgconfig: add bzip2.pc for rust formulae by @cho-m in #18545
• feat: add attestation to the pkg installer by @SMillerDev in #18555
• cask/cask: pass args when initalising methods by @bevanjkay in #18438
• feat: Install an unlinked formula via brew install if --overwrite is passed by @boblail in #18536
• extend/ENV/super: use brew libs for some Python packages by @cho-m in #18557
• Perform preinstall checks when a formula is installed via a cask by @Bo98 in #18547
• unpack_strategy: fix unpack Dir.mktmpdir group by @cho-m in #18548

Full Changelog: 4.4.0...4.4.1