Bump coverlet.collector from 3.1.2 to 3.2.0 in /src (#1488)

Bumps [coverlet.collector](https://github.com/coverlet-coverage/coverlet) from 3.1.2 to 3.2.0.
- [Release notes](https://github.com/coverlet-coverage/coverlet/releases)
- [Commits](https://github.com/coverlet-coverage/coverlet/commits/v3.2.0)

---
updated-dependencies:
- dependency-name: coverlet.collector
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Signed-off-by: dependabot[bot] <support@github.com>
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src/AzureIoTHub.Portal.Tests.Unit/AzureIoTHub.Portal.Tests.Unit.csproj

@@ -35,7 +35,7 @@
     <PackageReference Include="Moq" Version="4.18.2" />
     <PackageReference Include="NUnit" Version="3.13.3" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.2.1" />
-    <PackageReference Include="coverlet.collector" Version="3.1.2">
+    <PackageReference Include="coverlet.collector" Version="3.2.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>