Update sigstore/cosign-installer action to v3.4.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
sigstore/cosign-installer	action	minor	v3.3.0 -> v3.4.0

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Release Notes

sigstore/cosign-installer (sigstore/cosign-installer)

### [`v3.4.0`](https://togithub.com/sigstore/cosign-installer/releases/tag/v3.4.0) [Compare Source](https://togithub.com/sigstore/cosign-installer/compare/v3.3.0...v3.4.0) #### What's Changed - Use examples that work with multiple tags by [@​jkreileder](https://togithub.com/jkreileder) in [https://github.com/sigstore/cosign-installer/pull/155](https://togithub.com/sigstore/cosign-installer/pull/155) - default cosign install to release v2.2.3 by [@​cpanato](https://togithub.com/cpanato) in [https://github.com/sigstore/cosign-installer/pull/156](https://togithub.com/sigstore/cosign-installer/pull/156) #### New Contributors - [@​jkreileder](https://togithub.com/jkreileder) made their first contribution in [https://github.com/sigstore/cosign-installer/pull/155](https://togithub.com/sigstore/cosign-installer/pull/155) **Full Changelog**: https://github.com/sigstore/cosign-installer/compare/v3...v3.4.0

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