Bump mongodb-driver from 3.12.7 to 3.12.8 (#48)
Bump mongodb-driver from 3.12.7 to 3.12.8 (#48)

Bumps [mongodb-driver](https://github.com/mongodb/mongo-java-driver) from 3.12.7 to 3.12.8.
- [Release notes](https://github.com/mongodb/mongo-java-driver/releases)
- [Commits](https://github.com/mongodb/mongo-java-driver/compare/r3.12.7...r3.12.8)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>

Co-authored-by: dependabot-preview[bot] <6a4c1c4838f800d1998274cd5234e1f65c55e90c@users.noreply.github.com>
nossralf/flume-mongodb-sink