Tag the 0.9.0 release

[flavio]

Prepare 0.9.0 release

This is a minor release since some API have been changed.

== What's Changed

• sign: init by @jleightcap in sign: init #310
• cargo audit: ignore RUSTSEC-2023-0071 by @jleightcap in cargo audit: ignore RUSTSEC-2023-0071 #321
• chore(deps): Update json-syntax requirement from 0.9.6 to 0.10.0 by @dependabot in chore(deps): Update json-syntax requirement from 0.9.6 to 0.10.0 #319
• chore(deps): Update cached requirement from 0.46.0 to 0.47.0 by @dependabot in chore(deps): Update cached requirement from 0.46.0 to 0.47.0 #323
• chore(deps): Update serial_test requirement from 2.0.0 to 3.0.0 by @dependabot in chore(deps): Update serial_test requirement from 2.0.0 to 3.0.0 #322
• dep: update rustls-webpki, fold in pki_types by @jleightcap in dep: update rustls-webpki, fold in pki_types #324
• chore(deps): Update cached requirement from 0.47.0 to 0.48.0 by @dependabot in chore(deps): Update cached requirement from 0.47.0 to 0.48.0 #325
• chore(deps): Update json-syntax requirement from 0.10.0 to 0.11.1 by @dependabot in chore(deps): Update json-syntax requirement from 0.10.0 to 0.11.1 #327
• chore(deps): Update cached requirement from 0.48.0 to 0.49.2 by @dependabot in chore(deps): Update cached requirement from 0.48.0 to 0.49.2 #329
• chore(deps): Update json-syntax requirement from 0.11.1 to 0.12.2 by @dependabot in chore(deps): Update json-syntax requirement from 0.11.1 to 0.12.2 #330
• lint: fix lint error of chrono and tokio by @Xynnn007 in lint: fix lint error of chrono and tokio #334
• chore(deps): Update base64 requirement from 0.21.0 to 0.22.0 by @dependabot in chore(deps): Update base64 requirement from 0.21.0 to 0.22.0 #332
• The Repository trait and ManualRepository struct no longer require a feature flag by @tannaurus in The Repository trait and ManualRepository struct no longer require a feature flag #331
• chore(deps): Bump actions/checkout from 4.1.1 to 4.1.2 by @dependabot in chore(deps): Bump actions/checkout from 4.1.1 to 4.1.2 #336
• chore(deps): Update reqwest requirement from 0.11 to 0.12 by @dependabot in chore(deps): Update reqwest requirement from 0.11 to 0.12 #341
• update tough dep by @astoycos in update tough dep #340

== New Contributors

• @tannaurus made their first contribution in The Repository trait and ManualRepository struct no longer require a feature flag #331
• @astoycos made their first contribution in update tough dep #340

Full Changelog: v0.8.0...v0.9.0