Update CHANGELOG.md for 4.68.0 (#5124)

* Update CHANGELOG.md

* Apply suggestions from code review

Co-authored-by: Gladwin Johnson <90415114+gladjohn@users.noreply.github.com>

* Update CHANGELOG with new features and fixes

* Update CHANGELOG.md for version 4.68.0

Removing WithAdditionalCacheKeyComponents because it is still internal

* Update CHANGELOG.md

Co-authored-by: Gladwin Johnson <90415114+gladjohn@users.noreply.github.com>

---------

Co-authored-by: Gladwin Johnson <90415114+gladjohn@users.noreply.github.com>

CHANGELOG.md

@@ -1,3 +1,16 @@
+4.68.0
+==========
+### Features
+- Added WithFmiPath() api to support FMI scenarios in MSAL. See [Issue #5110](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/issues/5110)
+- MSAL will now pass Client sku and Version to MsalRuntime for MSAL Runtime's client telemetry. See [Issue #5103](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/pull/5103)
+
+### Bug Fixes
+- Reordered the condition for ManagedIdentitySource.MachineLearning to be checked after ManagedIdentitySource.AppService instead of before it. See [Issue #5077](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/issues/5077)
+- Improved Managed Identity Source Detection Logging for Debugging. See [Issue #5097](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/issues/5097)
+- When a 404 error occurs, MSAL will now include the endpoint and authority URLs in the exception message for better debugging. See [Issue #4769](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/issues/4769)
+- MSAL will now set `UseShellExecute` to `false` in OpenLinuxBrowser. See [Issue #5075](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/issues/5075)
+- Fixed a threading exception when using ExtraQueryParameters. See [Issue #5108](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/issues/5108)
+
 4.67.2
 ==========
 ### Bug Fixes