chore(deps): update dependency org.sonatype.plugins:nexus-staging-maven-plugin to v1.6.12

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.sonatype.plugins:nexus-staging-maven-plugin (source)	1.6.11 -> 1.6.12

---

Release Notes

sonatype/nexus-maven-plugins

### [`v1.6.12`](https://togithub.com/sonatype/nexus-maven-plugins/compare/release-1.6.11...release-1.6.12) [Compare Source](https://togithub.com/sonatype/nexus-maven-plugins/compare/release-1.6.11...release-1.6.12)

---

Configuration

📅 Schedule: 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 WhiteSource Renovate. View repository job log here.