chore(deps): update quay.io/oauth2-proxy/oauth2-proxy docker tag to v7.15.5

[renovate]

This PR contains the following updates:

Package	Update	Change
quay.io/oauth2-proxy/oauth2-proxy (source)	patch	v7.15.4 → v7.15.5

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Release Notes

oauth2-proxy/oauth2-proxy (quay.io/oauth2-proxy/oauth2-proxy)

v7.15.5

Compare Source

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[github-actions]

@@ spec.values.controllers.main.containers.main.image.tag @@
# helm.toolkit.fluxcd.io/v2/HelmRelease/authentication/oauth2-proxy
! ± value change
- v7.15.4@sha256:b1b2021fe8f4004573e8d690dec6c7bb29cc44364572cf8510a05bf3a0ae2ded
+ v7.15.5@sha256:8498b0d0ef0a7b29686414000a08aee467f02d0299c9ed1e006a8f33fc017916

@@ spec.template.spec.containers.main.image @@
# apps/v1/Deployment/authentication/oauth2-proxy
! ± value change
- quay.io/oauth2-proxy/oauth2-proxy:v7.15.4@sha256:b1b2021fe8f4004573e8d690dec6c7bb29cc44364572cf8510a05bf3a0ae2ded
+ quay.io/oauth2-proxy/oauth2-proxy:v7.15.5@sha256:8498b0d0ef0a7b29686414000a08aee467f02d0299c9ed1e006a8f33fc017916