Bump github.com/hashicorp/nomad from 1.2.5 to 1.2.6

Bumps [github.com/hashicorp/nomad](https://github.com/hashicorp/nomad) from 1.2.5 to 1.2.6.
- [Release notes](https://github.com/hashicorp/nomad/releases)
- [Changelog](https://github.com/hashicorp/nomad/blob/main/CHANGELOG.md)
- [Commits](https://github.com/hashicorp/nomad/compare/v1.2.5...v1.2.6)

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

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

go.mod

@@ -7,7 +7,7 @@ require (
 	github.com/google/uuid v1.3.0
 	github.com/gorilla/mux v1.8.0
 	github.com/gorilla/websocket v1.4.2
-	github.com/hashicorp/nomad v1.2.5
+	github.com/hashicorp/nomad v1.2.6
 	github.com/hashicorp/nomad/api v0.0.0-20220119212752-1471de4d372c
 	github.com/mitchellh/mapstructure v1.4.3
 	github.com/sirupsen/logrus v1.8.1