chore: Bump Microsoft.Extensions.Caching.StackExchangeRedis from 9.0.6 to 9.0.9

---
updated-dependencies:
- dependency-name: Microsoft.Extensions.Caching.StackExchangeRedis
  dependency-version: 9.0.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -29,7 +29,7 @@
     <PackageVersion Include="OpenTelemetry.Instrumentation.Http" Version="1.12.0" />
     <PackageVersion Include="OpenTelemetry.Exporter.Console" Version="1.12.0" />
     <!-- Additional caching packages -->
-    <PackageVersion Include="Microsoft.Extensions.Caching.StackExchangeRedis" Version="9.0.6" />
+    <PackageVersion Include="Microsoft.Extensions.Caching.StackExchangeRedis" Version="9.0.9" />
     <!-- Security packages -->
     <PackageVersion Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="9.0.6" />
     <!-- Replace vulnerable AzureKeyVault package with modern Azure SDK -->