chore(release): prepare for 0.8.1 (#450)

## [0.8.1] - 2026-10-20

### ⚙️ Miscellaneous Tasks

- *(deps)* Update golang:1.27 docker digest to e432b43 (#445)
- *(deps)* Update golang:1.27 docker digest to 8201530 (#447)
- *(deps)* Update golang:1.27 docker digest to 9578611 (#449)

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**Note:** Please use **Squash Merge** when merging this PR.

Reviewed-on: https://gitea.unbound.se/unboundsoftware/auth0mock/pulls/450
Co-authored-by: Unbound Releaser <releaser@unbound.se>

.version

@@ -1,3 +1,3 @@
 {
-  "version": "0.8.0"
+  "version": "0.8.1"
 }

CHANGELOG.md

@@ -2,6 +2,14 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.8.1] - 2026-10-20
+
+### ⚙️ Miscellaneous Tasks
+
+- *(deps)* Update golang:1.27 docker digest to e432b43 (#445)
+- *(deps)* Update golang:1.27 docker digest to 8201530 (#447)
+- *(deps)* Update golang:1.27 docker digest to 9578611 (#449)
+
 ## [0.8.0] - 2026-10-07
 
 ### 🚀 Features