Update Helm release oauth2-proxy to v7.7.28

[renovate]

This PR contains the following updates:

Package	Update	Change
oauth2-proxy (source)	patch	7.7.27 -> 7.7.28

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Release Notes

oauth2-proxy/manifests (oauth2-proxy)

v7.7.28

Compare Source

A reverse proxy that provides authentication with Google, Github or other providers

What's Changed

• chore: 'check-redis.sh' script accounts for rediss:// scheme by @​irh-hdh in https://github.com/oauth2-proxy/manifests/pull/249

New Contributors

• @​irh-hdh made their first contribution in https://github.com/oauth2-proxy/manifests/pull/249

Full Changelog: oauth2-proxy/manifests@oauth2-proxy-7.7.27...oauth2-proxy-7.7.28

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