Bump symfony/var-dumper from 3.3.10 to 4.0.0

[dependabot-preview[bot]]

Bumps symfony/var-dumper from 3.3.10 to 4.0.0.

• Changelog
• Commits

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

If you'd like to skip this version, you can just close this PR. If you have any feedback just mention @dependabot in the comments below.

[dependabot-preview[bot]]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this [major|minor] version.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.

[shyim]

@dependabot ignore this major 4

[dependabot-preview[bot]]

OK, I won't notify you about version 4.x.x again, unless you re-open this PR or update to a 4.x.x release yourself.