[release/9.0] Bump the runtime-dependencies group with 2 updates (#8397)

Bumps Microsoft.NETCore.DotNetHost from 8.0.17 to 8.0.18
Bumps System.Text.Json from 8.0.5 to 8.0.6

---
updated-dependencies:
- dependency-name: Microsoft.NETCore.DotNetHost
  dependency-version: 8.0.18
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: runtime-dependencies
- dependency-name: System.Text.Json
  dependency-version: 8.0.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: runtime-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

eng/dependabot/net8.0/Versions.props

@@ -10,8 +10,8 @@
     <!-- Microsoft.Extensions.Logging.Console -->
     <MicrosoftExtensionsLoggingConsole80Version>8.0.1</MicrosoftExtensionsLoggingConsole80Version>
     <!-- Microsoft.NETCore.App -->
-    <MicrosoftNETCoreApp80Version>8.0.17</MicrosoftNETCoreApp80Version>
+    <MicrosoftNETCoreApp80Version>8.0.18</MicrosoftNETCoreApp80Version>
     <!-- System.Text.Json -->
-    <SystemTextJson80Version>8.0.5</SystemTextJson80Version>
+    <SystemTextJson80Version>8.0.6</SystemTextJson80Version>
   </PropertyGroup>
 </Project>