Merged PR 54673: Disable NuGet audit

# {PR title}
#64177
Summary of the changes (Less than 80 chars)

## Description

{Detail}

Fixes #{bug number} (in this specific format)

## Customer Impact

{Justification}

## Regression?

- [ ] Yes
- [ ] No

[If yes, specify the version the behavior has regressed from]

## Risk

- [ ] High
- [ ] Medium
- [ ] Low

[Justify the selection above]

## Verification

- [ ] Manual (required)
- [ ] Automated

## Packaging changes reviewed?

- [ ] Yes
- [ ] No
- [ ] N/A

----

## When servicing release/2.3

- [ ] Make necessary changes in eng/PatchConfig.props

Disable NuGet audit

Author: dkurepa

Directory.Build.props

@@ -234,6 +234,11 @@
     <CustomBeforeMicrosoftCommonCrossTargetingTargets>$(MSBuildThisFileDirectory)Directory.Build.BeforeCommonTargets.targets</CustomBeforeMicrosoftCommonCrossTargetingTargets>
   </PropertyGroup>
 
+  <!-- TODO: Re-enable NuGet Audit and fix alerts: https://github.com/dotnet/aspnetcore/issues/64177 -->
+  <PropertyGroup>
+    <NuGetAudit>false</NuGetAudit>
+  </PropertyGroup>
+
   <Import Project="eng\Workarounds.props" />
   <Import Project="artifacts\bin\GenerateFiles\Directory.Build.props" Condition=" '$(MSBuildProjectName)' != 'GenerateFiles' " />
   <Import Project="eng\Dependencies.props" />