Merge 4.3 into 4.4

[mongodb-php-bot]

Merge new changes from 4.3 into 4.4.

Commits

• Merge 4.2 into 4.3 (Merge 4.2 into 4.3 #2933): 82d9993
• Merge 4.1 into 4.2 (Merge 4.1 into 4.2 #2932): adf5566
• DOCSP-37770: Return results as JSON (DOCSP-37770: Return results as JSON #2921): d1802d1

Resolving conflicts

To resolve any conflicts, check out the temporary branch and run the following command:

git merge 4.4

Ignoring changes

To ignore from the remote branch, first reset the temporary branch to 4.4 and manually merge using the `ours` merge strategy:

git reset --hard 4.4
git merge --strategy=ours 4.3

Then, push the temporary branch to upate the pull request.