Bump sigstore/cosign-installer from 3.8.2 to 3.9.1

Bumps sigstore/cosign-installer from 3.8.2 to 3.9.1.

Release notes

Sourced from sigstore/cosign-installer's releases.

v3.9.1

What's Changed

• default action install to use release v2.5.1 by @​cpanato in sigstore/cosign-installer#193
• default cosign to v2.5.2 by @​cpanato in sigstore/cosign-installer#194

Full Changelog: https://github.com/sigstore/cosign-installer/compare/v3.9.0...v3.9.1

v3.9.0

What's Changed

• Bump actions/setup-go from 5.4.0 to 5.5.0 by @​dependabot in sigstore/cosign-installer#189
• bump cosign install to use release v2.5.0 as default by @​cpanato in sigstore/cosign-installer#191

Full Changelog: https://github.com/sigstore/cosign-installer/compare/v3...v3.9.0

Commits

• 398d4b0 default cosign to v2.5.2 (#194)
• 84f54a2 default action install to use release v2.5.1 (#193)
• fb28c2b bump cosign install to use release v2.5.0 as default (#191)
• e9a05e6 Bump actions/setup-go from 5.4.0 to 5.5.0 (#189)
• See full diff in compare view

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