upgrade to okhttp 5

[baywet]

we need to upgrade ok http to version 5, as this is a breaking release, we'll also need to make sure we include an exclamation mark in the commit message to bump the major version an avoid any upgrade issue for consumers. e.g. feat!: dependency https://github.com/microsoft/kiota-java/issues/1984 + release

[wimdeblauwe]

Our project that also uses mock-auth2-server is unable to upgrade to a newer version of that depenency because msgraph-sdk-java is not using okhttp 5 at present.