Bump github.com/stretchr/testify from 1.6.1 to 1.7.0

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Bumps github.com/stretchr/testify from 1.6.1 to 1.7.0.

Release notes

Sourced from github.com/stretchr/testify's releases.

Minor improvements and bug fixes

Minor feature improvements and bug fixes

Commits

• acba37e Only use repeatability if no repeatability left
• eb8c41e Add more tests to mock package
• a5830c5 Extract method to evaluate closest match
• 1962448 Use Repeatability as tie-breaker for closest match
• 92707c0 Fixed the link to not point to assert only
• 05dd0b2 Updated the readme to point to pkg.dev
• c26b7f3 Update assertions.go
• 8fb4b24 [Fix] The most recent changes to golang/protobuf breaks the spew Circular dat...
• dc8af72 add generated code for positive/negative assertion
• 1544508 add assert positive/negative
• Additional commits viewable in compare view

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