Bump coverlet.msbuild from 2.7.0 to 3.1.0

Bumps [coverlet.msbuild](https://github.com/coverlet-coverage/coverlet) from 2.7.0 to 3.1.0.
- [Release notes](https://github.com/coverlet-coverage/coverlet/releases)
- [Commits](https://github.com/coverlet-coverage/coverlet/commits/v3.1.0)

---
updated-dependencies:
- dependency-name: coverlet.msbuild
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

test/AutoTest.ArgumentNullException.Tests/AutoTest.ArgumentNullException.Tests.csproj

@@ -11,7 +11,7 @@
   <ItemGroup>
     <PackageReference Include="AutoFixture.AutoMoq" Version="4.17.0" />
     <PackageReference Include="AutoFixture.Xunit2" Version="4.17.0" />
-    <PackageReference Include="coverlet.msbuild" Version="2.7.0">
+    <PackageReference Include="coverlet.msbuild" Version="3.1.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>

test/AutoTest.ExampleLibrary.Tests/AutoTest.ExampleLibrary.Tests.csproj

@@ -11,7 +11,7 @@
   <ItemGroup>
     <PackageReference Include="AutoFixture.AutoMoq" Version="4.17.0" />
     <PackageReference Include="AutoFixture.Xunit2" Version="4.17.0" />
-    <PackageReference Include="coverlet.msbuild" Version="2.7.0">
+    <PackageReference Include="coverlet.msbuild" Version="3.1.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>