Bump Microsoft.SemanticKernel from 1.72.0 to 1.73.0

---
updated-dependencies:
- dependency-name: Microsoft.SemanticKernel
  dependency-version: 1.73.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Directory.Packages.props

@@ -13,7 +13,7 @@
     </RestoreSources>
   </PropertyGroup>
   <PropertyGroup>
-    <SemanticKernelVersion>1.72.0</SemanticKernelVersion>
+    <SemanticKernelVersion>1.73.0</SemanticKernelVersion>
   </PropertyGroup>
   <ItemGroup Condition="$(AccessToNugetFeed)">
     <PackageVersion Include="ContentFeedNuget" Version="$(ToolingPackagesVersion)" />