Prepare release 1.44.0

[max-sixty]

Summary

Prepare for the 1.44.0 release:

• Bump version to 1.44.0 in insta/Cargo.toml and cargo-insta/Cargo.toml
• Update CHANGELOG.md with all changes since 1.43.2

Changes in 1.44.0

• Added non-interactive snapshot review and reject modes for use in non-TTY environments (LLMs, CI pipelines, scripts) Add LLM-friendly non-interactive snapshot management #815
• Add --disable-nextest-doctest flag with deprecation warning Add --disable-nextest-doctest flag and deprecation warning #803
• Add ergonomic --test-runner-fallback / --no-test-runner-fallback flags Add ergonomic --test-runner-fallback/--no-test-runner-fallback flags #811
• Apply redactions to snapshot metadata Apply redactions to snapshot metadata #813
• Remove confusing 'previously unseen snapshot' message Remove confusing 'previously unseen snapshot' message #812
• Speed up JSON float rendering chore: speed up JSON float rendering #806 (@nyurik)
• Allow globset version up to 0.4.16 insta: Cargo: allow globset version up to 0.4.16 #810 (@g0hl1n)
• Improve documentation improve some of the docs #814 (@tshepang)
• Enforce starting newlines in assertions Enforce starting newlines #563

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