Onboard new SC members

The following tasks need to be done
* Add @aliok and @evankanderson as new members
* Remove @lance and @csantanapr

**Tasks**
- [x] Add new member in [STEERING-COMMITTEE.md](https://github.com/knative/community/blob/main/STEERING-COMMITTEE.md)
- [x] [peribolos](https://github.com/knative/community/tree/main/peribolos) for both knative and knative-sandbox
- [x] groups for mailing lists
- https://github.com/knative/community/blob/main/groups/committee-steering/groups.yaml
- https://github.com/knative/community/blob/main/groups/groups.yaml#L68
- [x] [CNCF Project maintainers](https://github.com/cncf/foundation/blob/main/project-maintainers.csv) --> https://github.com/cncf/foundation/pull/676
- [ ] CNCF Knative Project JIRA access (via [cncf service desk](https://cncfservicedesk.atlassian.net/servicedesk/customer/portal/1) Jira ticket)
- [ ] CNCF Knative maintainers group list (via [cncf service desk](https://cncfservicedesk.atlassian.net/servicedesk/customer/portal/1) Jira ticket)