Migrate to Jackson3

[jonesbusy]

Migrate to Jackson3

Jackson2 remains a dependency because of scribejava-core (looks like a dormant library still supporting Java 7. So I have some doubt it will ever be migrated to Jackson3. Just in case I submited a PR for this library as well: scribejava/scribejava#1088)

I just rely on existing tests

Feel free to take a look at this PR or park it for later

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[jonesbusy]

If any interest @nfalco79

[nfalco79]

For what this setter is used for? Does jackson 3 fails to use setHash method?

[jonesbusy]

I don't remember the cause, but one test was failing. I think there was a confusion with "hash" an "id" field at some point.

I don't know much more about the codebase or webhook payload.

[jonesbusy]

Without this BitbucketServerPullRequestEventTest#updatePayload fail

        assertThat(event.getPullRequest().getDestination().getCommit().getHash())
            .isEqualTo("d235f0c0aa22f4c75b2fb63b217e39e2d3c29f49");

which return null

Which confuses me is the "id" on the JsonCreator

    @JsonCreator
    public BitbucketServerCommit(@NonNull @JsonProperty("message") String message,
                                 @NonNull @JsonProperty("id") String hash,