Big Bang Bot: Update CODEOWNERS

Closes #285 (closed)

added kinddocs needs-attention priority1 statusreview labels

requested review from @peter.sigur, @piotr.machaj, @steven.donald, @blairbowden, @kliu, @bjacksonfv, and @amitg

added teamObservability label

approved this merge request

merged

mentioned in commit d8a87e0b