Update quay.io/oauth2-proxy/oauth2-proxy Docker tag to v7.9.0

[renovate]

This PR contains the following updates:

Package	Update	Change
quay.io/oauth2-proxy/oauth2-proxy (source)	minor	7.8.2 -> 7.9.0

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Release Notes

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

v7.9.0

Compare Source

Release Highlights

• 📨 OAuth 2.0 Multiple Response Type Encoding
• 📦️ Support for JWT encoded profile claims
• 🔵 Golang version upgrade to v1.23.8
• 🕵️‍♀️ Vulnerabilities have been addressed
  • CVE-2025-22871
• 🐛 Squashed some bugs

Important Notes

Breaking Changes

Changes since v7.8.2

• #​3031 Fixes Refresh Token bug with Entra ID and Workload Identity (#​3027)[https://github.com/oauth2-proxy/oauth2-proxy/issues/3028](https://redirect.github.com/oauth2-proxy/oauth2-proxy/issues/3028)8] by using client assertion when redeeming the token (@​richard87)
• #​3001 Allow to set non-default authorization request response mode (@​stieler-it)
• #​3041 chore(deps): upgrade to latest golang v1.23.x release (@​TheImplementer)
• #​1916 fix: role extraction from access token in keycloak oidc (@​Elektordi / @​tuunit)
• #​3014 feat: ability to parse JWT encoded profile claims (@​ikarius)

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