chore(deps): update quay.io/oauth2-proxy/oauth2-proxy docker tag to v7.15.2 (#1621)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

kubernetes/apps/authentication/oauth2-proxy/app/helmrelease.yaml

@@ -32,7 +32,7 @@ spec:
           main:
             image:
               repository: quay.io/oauth2-proxy/oauth2-proxy
-              tag: v7.15.1@sha256:39f08531587045a5443db43299bf8495696c99ed8d0e1fdcbe60534f7c02ce14
+              tag: v7.15.2@sha256:aa0bd8dd5ab0c78e4c91c92755ad573a5f92241f88138b4141b8ec803463b4fd
             env:
               OAUTH2_PROXY_PROVIDER: "oidc"
               OAUTH2_PROXY_USER_ID_CLAIM: "sub"