Update @semantic-release/git to the latest version 🚀

The devDependency @semantic-release/git was updated from `6.0.2` to `7.0.6`.

This version is not covered by your current version range.

If you don’t accept this pull request, your project will work just like it did before. However, you might be missing out on a bunch of new features, fixes and/or performance improvements from the dependency update.

Release Notes for v7.0.6

7.0.6 (2018-12-19)

Bug Fixes

look for modified fiels to commit only if there files matching the globs (7f26c5d)

Commits

The new version differs by 20 commits.

7f26c5d fix: look for modified fiels to commit only if there files matching the globs
651224e build: remove unnecessary docker service in Travis
7f80ca3 docs: fix minor formatting issue in message option notes
8efcce5 chore(package): update nyc and sinon
90f436a docs: update semantic-release default branch in links
39c660e style: fix prettier errors
e1aac3d fix: use default value for null options
15208d8 docs: harmonize docs with other plugins
39abf04 chore(package): update commitizen to version 3.0.0
ca9de5f fix(package): update debug to version 4.0.0
928f82f chore(package): update xo to version 0.23.0
a35f990 fix(package): update execa to version 1.0.0
20809c3 fix(package): update execa to version 0.11.0
87bdf03 chore(package): update get-stream to version 4.0.0
ad72012 docs: add note about branch protection

There are 20 commits in total.

See the full diff

FAQ and help

There is a collection of [frequently asked questions](https://greenkeeper.io/faq.html). If those don’t help, you can always [ask the humans behind Greenkeeper](https://github.com/greenkeeperio/greenkeeper/issues/new).

Your Greenkeeper bot :palm_tree:

SvenWesterlaken / mongo4j