Update go-junit-report to v2.0.0

[michaelsauter]

Closes #625

Tasks:

• [x] Updated design documents in docs/design directory or not applicable
• [x] Updated user-facing documentation in docs directory or not applicable
• [x] Ran tests (e.g. make test) or not applicable
• [x] Updated changelog or not applicable

[michaelsauter]

LGTM. Is this simply a version hygiene PR or was there something in particular that we would utilize?

Just version hygiene.