Bump github.com/hashicorp/vault/api from 1.1.1 to 1.2.0

Bumps [github.com/hashicorp/vault/api](https://github.com/hashicorp/vault) from 1.1.1 to 1.2.0.
- [Release notes](https://github.com/hashicorp/vault/releases)
- [Changelog](https://github.com/hashicorp/vault/blob/main/CHANGELOG.md)
- [Commits](https://github.com/hashicorp/vault/compare/v1.1.1...v1.2.0)

---
updated-dependencies:
- dependency-name: github.com/hashicorp/vault/api
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -5,15 +5,11 @@ go 1.16
 require (
 	github.com/cenkalti/backoff/v3 v3.2.2 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
-	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
-	github.com/hashicorp/go-multierror v1.1.1 // indirect
 	github.com/hashicorp/go-retryablehttp v0.7.0 // indirect
-	github.com/hashicorp/vault/api v1.1.1
+	github.com/hashicorp/vault/api v1.2.0
 	github.com/imdario/mergo v0.3.12
-	github.com/mitchellh/mapstructure v1.4.1 // indirect
 	github.com/pierrec/lz4 v2.6.1+incompatible // indirect
-	github.com/stretchr/testify v1.7.0 // indirect
 	go.unistack.org/micro/v3 v3.8.5
 	golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97 // indirect
 	golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac // indirect