Main fixes

• Fixing wrong notification type in that lead to wrong type of notifications (plaintext vs html) being sent #3558 by @dgtlmoon in https://github.com//pull/3559 OpenAPI specification, fixing enum for notification type, and notification_muted by @dgtlmoon in https://github.com//pull/3557 Other updates Update feedgen requirement from ~=0.9 to ~=1.0 by @dependabot[bot] in https://github.com//pull/3554 Update python-socketio requirement from ~=5.13.0 to ~=5.14.2 by @dependabot[bot] in https://github.com//pull/3552 Bump the all group with 2 updates by @dependabot[bot] in https://github.com//pull/3550 Update wtforms requirement from ~=3.0 to ~=3.2 by @dependabot[bot] in https://github.com//pull/3551 Update brotli requirement from ~=1.0 to ~=1.1 by @dependabot[bot] in https://github.com//pull/3553