Bump System.Collections.Immutable from 8.0.0 to 10.0.5

---
updated-dependencies:
- dependency-name: System.Collections.Immutable
  dependency-version: 10.0.5
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: System.Collections.Immutable
  dependency-version: 10.0.5
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: System.Collections.Immutable
  dependency-version: 10.0.5
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

FirebaseAdmin/FirebaseAdmin/FirebaseAdmin.csproj

@@ -32,7 +32,7 @@
     <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.3" PrivateAssets="All" />
     <PackageReference Include="Google.Api.Gax.Rest" Version="4.13.1" />
     <PackageReference Include="Google.Apis.Auth" Version="1.73.0" />
-    <PackageReference Include="System.Collections.Immutable" Version="8.0.0" />
+    <PackageReference Include="System.Collections.Immutable" Version="10.0.5" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.556">
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>