build(deps): bump MongoDB.Driver in /services/api/Tweek.ApiService

Bumps [MongoDB.Driver](https://github.com/mongodb/mongo-csharp-driver) from 2.12.2 to 2.20.0.
- [Release notes](https://github.com/mongodb/mongo-csharp-driver/releases)
- [Commits](mongodb/mongo-csharp-driver@v2.12.2...v2.20.0)

---
updated-dependencies:
- dependency-name: MongoDB.Driver
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

addons/Context/Tweek.Drivers.Context.MongoDb/Tweek.Drivers.Context.MongoDb.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
  <TargetFramework>netstandard2.1</TargetFramework>
  <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
@@ -12,7 +12,7 @@
  </PropertyGroup>
  <ItemGroup>
  <PackageReference Include="FSharpUtils.Newtonsoft.JsonValue" Version="0.2.6" />
- <PackageReference Include="MongoDB.Driver" Version="2.12.2" />
+ <PackageReference Include="MongoDB.Driver" Version="2.20.0" />
  <PackageReference Include="System.Collections.Immutable" Version="5.0.0" />
  </ItemGroup>
  <ItemGroup>