Merge pull request #622 from DuendeSoftware/7.2.0-release-upgrade

Add upgrade guide for Duende IdentityServer v7.1 to v7.2

Author: maartenba

IdentityServer/v7/docs/content/upgrades/v7.1_to_v7.2.md

@@ -0,0 +1,38 @@
+---
+title: "Duende IdentityServer v7.1 to v7.2"
+weight: 28
+---
+
+This upgrade guide covers upgrading from Duende IdentityServer v7.1 to v7.2 ([release notes](https://github.com/DuendeSoftware/IdentityServer/releases/tag/7.2.0)).
+
+## What's New
+Duende IdentityServer 7.2 adds:
+- Do not issue *TokenIssuedFailureEvent* for *use_dpop_nonce* error
+- Use *AsyncServiceScope* in Background Services
+- Use query-safe URL fragment when returning an error
+- Add an option for strict validation of assertion audiences
+- General improvements to XML documentation and null reference exception handling
+- Preview Features: Strict Audience Validation and Discovery Document Caching
+- Bug fixes and ongoing maintenance
+
+There are no changes to the data stores in this release.
+
+## Step 1: Update NuGet package
+
+In your IdentityServer host project, update the version of the NuGet.
+For example in your project file:
+
+```
+<PackageReference Include="Duende.IdentityServer" Version="7.1.0" />
+```
+
+would change to:
+
+```
+<PackageReference Include="Duende.IdentityServer" Version="7.2.0" />
+```
+
+
+## Step 2: Done!
+
+That's it. Of course, at this point you can and should test that your IdentityServer is updated and working properly.