Bump System.Text.RegularExpressions in /MobileCRM/MobileCRM.Android (#737)

Bumps System.Text.RegularExpressions from 4.3.0 to 4.3.1.

---
updated-dependencies:
- dependency-name: System.Text.RegularExpressions
  dependency-type: direct:production
...

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MobileCRM/MobileCRM.Android/MobileCRM.Android.csproj

@@ -87,7 +87,7 @@
     <PackageReference Include="System.Security.Cryptography.X509Certificates" Version="4.3.1" />
     <PackageReference Include="System.Text.Encoding" Version="4.3.0" />
     <PackageReference Include="System.Text.Encoding.Extensions" Version="4.3.0" />
-    <PackageReference Include="System.Text.RegularExpressions" Version="4.3.0" />
+    <PackageReference Include="System.Text.RegularExpressions" Version="4.3.1" />
     <PackageReference Include="System.Threading" Version="4.3.0" />
     <PackageReference Include="System.Threading.Tasks" Version="4.3.0" />
     <PackageReference Include="System.Threading.Timer" Version="4.3.0" />