fix(deps): update module github.com/sigstore/sigstore to v1.7.4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
github.com/sigstore/sigstore	require	patch	v1.7.3 -> v1.7.4

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Release Notes

sigstore/sigstore (github.com/sigstore/sigstore)

v1.7.4

Compare Source

What's Changed

• upgrade ci to run go1.21 and set min go version to 1.20 by @​cpanato in https://github.com/sigstore/sigstore/pull/1372
• chore: Update the containers/image branch name by @​haiyuewa in https://github.com/sigstore/sigstore/pull/1403
• Handles the error in kms/hashivault by @​PuneetPunamiya in https://github.com/sigstore/sigstore/pull/1414
• update crypto/net/oauth2 dependencies by @​cpanato in https://github.com/sigstore/sigstore/pull/1435
• ensure e2e tests run on new KMS modules by @​bobcallaway in https://github.com/sigstore/sigstore/pull/1441

New Contributors

• @​haiyuewa made their first contribution in https://github.com/sigstore/sigstore/pull/1403
• @​PuneetPunamiya made their first contribution in https://github.com/sigstore/sigstore/pull/1414

Full Changelog: sigstore/sigstore@v1.7.3...v1.7.4

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