Bump BouncyCastle.Cryptography

Bumps the nuget group with 1 update in the /tests/NRedisStack.Tests directory: [BouncyCastle.Cryptography](https://github.com/bcgit/bc-csharp).


Updates `BouncyCastle.Cryptography` from 2.2.0 to 2.3.1
- [Commits](bcgit/bc-csharp@release-2.2.0...release-2.3.1)

---
updated-dependencies:
- dependency-name: BouncyCastle.Cryptography
  dependency-type: direct:production
  dependency-group: nuget
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

tests/NRedisStack.Tests/NRedisStack.Tests.csproj

@@ -26,7 +26,7 @@
     <PackageReference Include="StackExchange.Redis" Version="2.7.33" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.assert" Version="2.4.1" />
-    <PackageReference Include="BouncyCastle.Cryptography" Version="2.2.0" />
+    <PackageReference Include="BouncyCastle.Cryptography" Version="2.3.1" />
   </ItemGroup>
 
   <ItemGroup>