dependency: bump dependabot-omnibus from 0.139.2 to 0.140.0

Bumps dependabot-omnibus from 0.139.2 to 0.140.0.

Changelog

Sourced from dependabot-omnibus's changelog.

v0.140.0, 7 April 2021

• Bundler: Detecting and using the correct major Bundler version is now enabled by default
• Python: Add versions 3.8.9, 3.9.3 and 3.9.4
• Bump friendsofphp/php-cs-fixer in /composer/helpers/v1
• Bump friendsofphp/php-cs-fixer in /composer/helpers/v2

Commits

• ac276c9 Merge pull request #3455 from dependabot/v0.140.0-release-notes
• 6f4b8f3 v0.140.0
• 13718d4 Merge pull request #3454 from dependabot/feelepxyz/delete-old-bundler-fixtures
• 6eca32e Merge pull request #3422 from dependabot/brrygrdn/remove-bundler-feature-flag
• f8fce85 Bundler: Delete unused fixture files
• f223031 Merge pull request #3432 from dependabot/jurre/explain-pre-installed-python
• 8b654f6 Merge pull request #3451 from dependabot/dependabot/composer/composer/helpers...
• 8b8ffaf Merge pull request #3452 from dependabot/dependabot/composer/composer/helpers...
• f96bf94 Bump friendsofphp/php-cs-fixer in /composer/helpers/v1
• 689a98d Bump friendsofphp/php-cs-fixer in /composer/helpers/v2
• Additional commits viewable in compare view

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