Bump the nuget-dependencies group with 2 updates (#54)

Bumps System.Collections.Immutable from 9.0.10 to 10.0.5
Bumps TUnit from 1.0.39 to 1.21.6

---
updated-dependencies:
- dependency-name: System.Collections.Immutable
  dependency-version: 10.0.5
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: nuget-dependencies
- dependency-name: TUnit
  dependency-version: 1.21.6
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: nuget-dependencies
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

MinimalEvents/MinimalEvents.csproj

@@ -33,7 +33,7 @@
     </ItemGroup>
 
     <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.1'">
-        <PackageReference Include="System.Collections.Immutable" Version="9.0.10" />
+        <PackageReference Include="System.Collections.Immutable" Version="10.0.5" />
     </ItemGroup>
 
     <ItemGroup>

MinimalEventsTests/MinimalEventsTests.csproj

@@ -10,7 +10,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="TUnit" Version="1.0.39" />
+      <PackageReference Include="TUnit" Version="1.21.6" />
     </ItemGroup>
 
     <ItemGroup>