Update changelog for 7.6.1 (#2639)

CHANGELOG.md

@@ -1,10 +1,17 @@
 See the [releases](https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/releases) for details on bug fixes and added features.
 
-
-Pending Next Release
+7.6.1
 =====
+### New Features:
+- Add  missing metadata parameters to OpenIdConnectConfiguration. See issue [#2498](https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/issues/2498) for details. 
+
 ### Bug Fixes:
+- Fix over-reporting of `IDX14100`. See issue [#2058](https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/issues/2058) and PR [#2618](https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/pull/2618) for details.
+- `JwtRegisteredClaimNames` now contains previously missing Standard OpenIdConnect claims. See issue [#1598](https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/issues/1598) for details.
+
+### Performance Improvements:
 - Reduced allocations in `AadIssuerValidator` by not using `string.Replace` where appropriate. See issue [#2595](https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/issues/2595) and PR [#2597](https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/pull/2597) for more details.
+- No longer for every string claim, calling DateTime.TryParse on each value, whether it is expected to be a DateTime or not. See issue [#2615](https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/issues/2615) for details.
 
 7.6.0
 =====