chore(deps): update dependency cosign to v3

This MR contains the following updates:

Package	Update	Change
cosign	major	2.6.1 -> 3.0.2

MR created with the help of gitlab-org/frontend/renovate-gitlab-bot

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Release Notes

sigstore/cosign (cosign)

v3.0.2

Compare Source

v3.0.2 is a functionally equivalent release to v3.0.0 and v3.0.1, with a fix for CI to publish signed releases in the new bundle format.

• Note that the --bundle flag specifying an output file to write the Sigstore bundle (which contains all relevant verification material) has moved from optional to required in v3.

Changes

• choose different signature filename for KMS-signed release signatures (#​4448)
• Update rekor-tiles version path (#​4450)

v3.0.1

Compare Source

v3.0.1 is an equivalent release to v3.0.0, which was never published due to a failure in our CI workflows.

• Note that the --bundle flag specifying an output file to write the Sigstore bundle (which contains all relevant verification material) has moved from optional to required in v3.

Changes

• update goreleaser config for v3.0.0 release (#​4446)

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