Update module github.com/stretchr/testify to v1.8.0

This PR contains the following updates:

Package	Type	Update	Change
github.com/stretchr/testify	require	minor	`v1.7.5` -> `v1.8.0`

Release Notes

stretchr/testify

### [`v1.8.0`](https://togithub.com/stretchr/testify/compare/v1.7.5...v1.8.0) [Compare Source](https://togithub.com/stretchr/testify/compare/v1.7.5...v1.8.0)

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

[ ] If you want to rebase/retry this PR, click this checkbox.

This PR has been generated by Mend Renovate. View repository job log here.

⚠ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

any of the package files in this branch needs updating, or
the branch becomes conflicted, or
you click the rebase/retry checkbox if found above, or
you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: go.sum

Command failed: docker run --rm --name=renovate_go --label=renovate_child -v "/mnt/renovate/gh/idodod/protoc-gen-fieldmask":"/mnt/renovate/gh/idodod/protoc-gen-fieldmask" -v "/tmp/renovate-cache":"/tmp/renovate-cache" -e GOPATH -e GOPROXY -e GOFLAGS -e CGO_ENABLED -e GIT_CONFIG_KEY_0 -e GIT_CONFIG_VALUE_0 -e GIT_CONFIG_KEY_1 -e GIT_CONFIG_VALUE_1 -e GIT_CONFIG_KEY_2 -e GIT_CONFIG_VALUE_2 -e GIT_CONFIG_COUNT -e GIT_CONFIG_KEY_3 -e GIT_CONFIG_VALUE_3 -e GIT_CONFIG_KEY_4 -e GIT_CONFIG_VALUE_4 -e GIT_CONFIG_KEY_5 -e GIT_CONFIG_VALUE_5 -w "/mnt/renovate/gh/idodod/protoc-gen-fieldmask" docker.io/renovate/go:1.18.3 bash -l -c "go get -d -t ./... && go mod tidy && go mod tidy"
go: downloading google.golang.org/protobuf v1.28.0
go: downloading github.com/iancoleman/strcase v0.2.0
go: downloading github.com/stretchr/testify v1.8.0
go: downloading github.com/davecgh/go-spew v1.1.1
go: downloading github.com/pmezard/go-difflib v1.0.0
go: downloading gopkg.in/yaml.v3 v3.0.1
github.com/idodod/protoc-gen-fieldmask/test tested by
    github.com/idodod/protoc-gen-fieldmask/test.test imports
    github.com/idodod/protoc-gen-fieldmask/test/gen/cases: cannot find module providing package github.com/idodod/protoc-gen-fieldmask/test/gen/cases
github.com/idodod/protoc-gen-fieldmask/test tested by
    github.com/idodod/protoc-gen-fieldmask/test.test imports
    github.com/idodod/protoc-gen-fieldmask/test/gen/cases/a: cannot find module providing package github.com/idodod/protoc-gen-fieldmask/test/gen/cases/a
github.com/idodod/protoc-gen-fieldmask/test tested by
    github.com/idodod/protoc-gen-fieldmask/test.test imports
    github.com/idodod/protoc-gen-fieldmask/test/gen/cases/b: cannot find module providing package github.com/idodod/protoc-gen-fieldmask/test/gen/cases/b
github.com/idodod/protoc-gen-fieldmask/test tested by
    github.com/idodod/protoc-gen-fieldmask/test.test imports
    github.com/idodod/protoc-gen-fieldmask/test/gen/cases/thirdpartyimport: cannot find module providing package github.com/idodod/protoc-gen-fieldmask/test/gen/cases/thirdpartyimport

idodod / protoc-gen-fieldmask