NCBC-3883: Update System.Text.Json dependency to 8.0.5

Motivation:
Security vulnerability in dependency

Modifications:
* Update to System.Text.Json 8.0.5

Change-Id: Ied0b0a1da1c58a7e036289e35d66fe7549c3604f
Reviewed-on: https://review.couchbase.org/c/couchbase-net-client/+/217765
Reviewed-by: Michael Reiche <[email protected]>
Tested-by: Build Bot <[email protected]>

Author: RiPont

Directory.Packages.props

@@ -25,7 +25,7 @@
     <PackageVersion Include="System.Linq.Async" Version="6.0.1" />
     <PackageVersion Include="System.Memory" Version="4.5.5" />
     <PackageVersion Include="System.Runtime.CompilerServices.Unsafe" Version="6.0.0" />
-    <PackageVersion Include="System.Text.Json" Version="8.0.4" />
+    <PackageVersion Include="System.Text.Json" Version="8.0.5" />
     <PackageVersion Include="System.Threading.Channels" Version="5.0.0" />
     <PackageVersion Include="System.Threading.Tasks.Dataflow" Version="5.0.0" />
     <PackageVersion Include="System.Diagnostics.DiagnosticSource" Version="6.0.0" />