Bump github.com/imdario/mergo from 0.3.12 to 0.3.13 (#78)

Bumps [github.com/imdario/mergo](https://github.com/imdario/mergo) from 0.3.12 to 0.3.13.
- [Release notes](https://github.com/imdario/mergo/releases)
- [Commits](https://github.com/imdario/mergo/compare/0.3.12...v0.3.13)

---
updated-dependencies:
- dependency-name: github.com/imdario/mergo
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/cenkalti/backoff/v3 v3.2.2 // indirect
 	github.com/hashicorp/go-retryablehttp v0.7.0 // indirect
 	github.com/hashicorp/vault/api v1.7.2
-	github.com/imdario/mergo v0.3.12
+	github.com/imdario/mergo v0.3.13
 	github.com/pierrec/lz4 v2.6.1+incompatible // indirect
 	go.unistack.org/micro/v3 v3.9.8
 	golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac // indirect