changelog: add missing entry for #13539 (#14129)

.changelog/13539.txt

@@ -0,0 +1,3 @@
+```release-note:improvement
+build: Update go toolchain to 1.18.5
+```

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 IMPROVEMENTS:
 
+* build: Update go toolchain to 1.18.5 [[GH-13956](https://github.com/hashicorp/nomad/pull/13956)]
 * csi: Add `stage_publish_base_dir` field to `csi_plugin` block to support plugins that require a specific staging/publishing directory for mounts [[GH-13919](https://github.com/hashicorp/nomad/issues/13919)]
 * qemu: use shorter socket file names to reduce the chance of hitting the max path length [[GH-13971](https://github.com/hashicorp/nomad/issues/13971)]
 * template: Expose consul-template configuration options at the client level for `nomad_retry`. [[GH-13907](https://github.com/hashicorp/nomad/issues/13907)]
@@ -230,6 +231,7 @@ BUG FIXES:
 BUG FIXES:
 
 * acl: Fixed a bug where the timestamp for expiring one-time tokens was not deterministic between servers [[GH-13737](https://github.com/hashicorp/nomad/issues/13737)]
+* build: Update go toolchain to 1.18.5 [[GH-13956](https://github.com/hashicorp/nomad/pull/13956)]
 * deployments: Fixed a bug that prevented auto-approval if canaries were marked as unhealthy during deployment [[GH-14001](https://github.com/hashicorp/nomad/issues/14001)]
 * metrics: Fixed a bug where blocked evals with no class produced no dc:class scope metrics [[GH-13786](https://github.com/hashicorp/nomad/issues/13786)]
 * namespaces: Fixed a bug that allowed deleting a namespace that contained a CSI volume [[GH-13880](https://github.com/hashicorp/nomad/issues/13880)]