Update dependency coverlet.collector to v6 (#754)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [coverlet.collector](https://togithub.com/coverlet-coverage/coverlet)
| nuget | major | `3.2.0` -> `6.0.0` |

---

### Release Notes

<details>
<summary>coverlet-coverage/coverlet</summary>

###
[`v6.0.0`](https://togithub.com/coverlet-coverage/coverlet/releases/tag/v6.0.0)

Fixed
\-Could not write lines to file CoverletSourceRootsMapping - in use by
another
process[coverlet-coverage/coverlet#1155
-Incorrect coverage for methods returning IAsyncEnumerable in generic
classes[coverlet-coverage/coverlet#1383
-Wrong branch coverage for async methods .NET Standard
1.x[coverlet-coverage/coverlet#1376
-Empty path exception in visual basic
projects[coverlet-coverage/coverlet#775
-Allign published nuget package version to github release
version[coverlet-coverage/coverlet#1413
\-Sync nuget and github release
version[coverlet-coverage/coverlet#1122

Improvements
\-Migration of the project to .NET
6.0[coverlet-coverage/coverlet#1473

Breaking changes
New parameter ExcludeAssembliesWithoutSources to control automatic
assembly exclusion
[coverlet-coverage/coverlet#1164.
The parameter InstrumentModulesWithoutLocalSources has been removed.
since it can be handled by setting ExcludeAssembliesWithoutSources to
None.
The default heuristics for determining whether to instrument an assembly
has been changed. In previous versions any missing source file was taken
as a signal that it was a third-party project that shouldn't be
instrumented, with exceptions for some common file name patterns for
source generators. Now only assemblies where no source files at all can
be found are excluded from instrumentation, and the code for detecting
source generator files have been removed. To get back to the behaviour
that at least one missing file is sufficient to exclude an assembly, set
ExcludeAssembliesWithoutSources to MissingAny, or use assembly exclusion
filters for more fine-grained control.

[Diff between 3.2.0 and
6.0.0](https://togithub.com/coverlet-coverage/coverlet/compare/v5.7.2...v6.0.0)

</details>

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tests/Tests.csproj

@@ -15,7 +15,7 @@
         <PackageReference Include="nunit" Version="3.13.3" />
         <PackageReference Include="NUnit3TestAdapter" Version="4.4.2" />
         <PackageReference Include="RichardSzalay.MockHttp" Version="6.0.0" />
-        <PackageReference Include="coverlet.collector" Version="3.2.0" />
+        <PackageReference Include="coverlet.collector" Version="6.0.0" />
     </ItemGroup>
 
     <ItemGroup>

tests/packages.lock.json

@@ -24,9 +24,9 @@
       },
       "coverlet.collector": {
         "type": "Direct",
-        "requested": "[3.2.0, )",
-        "resolved": "3.2.0",
-        "contentHash": "xjY8xBigSeWIYs4I7DgUHqSNoGqnHi7Fv7/7RZD02rvZyG3hlsjnQKiVKVWKgr9kRKgmV+dEfu8KScvysiC0Wg=="
+        "requested": "[6.0.0, )",
+        "resolved": "6.0.0",
+        "contentHash": "tW3lsNS+dAEII6YGUX/VMoJjBS1QvsxqJeqLaJXub08y1FSjasFPtQ4UBUsudE9PNrzLjooClMsPtY2cZLdXpQ=="
       },
       "FluentAssertions": {
         "type": "Direct",