Github repo url is case insensitive

Description of problem:

When creating Repository with valid URL -> https://github.com/michkov/devfile-sample-python-basic but the official url is https://github.com/Michkov/devfile-sample-python-basic then Pipelines-as-Code does not match the repository.

{"severity":"WARNING","timestamp":"2023-05-17T09:36:43.817675917Z","logger":"pipelinesascode","caller":"events/emit.go:49","message":"cannot find a namespace match for https://github.com/Michkov/devfile-sample-python-basic","commit":"5e32bbb","provider":"github","event-id":"552561a4-f496-11ed-8a8d-3250eac2bd58","event-sha":"f945da2895de7ab7be64a5be090ca03cec62322c","event-type":"push"}

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