build(deps): bump Mindscape.Raygun4Net.NetCore in /src (#1055)

Bumps [Mindscape.Raygun4Net.NetCore](https://github.com/MindscapeHQ/raygun4net) from 6.4.3 to 7.0.0.
- [Release notes](https://github.com/MindscapeHQ/raygun4net/releases)
- [Commits](https://github.com/MindscapeHQ/raygun4net/commits)

---
updated-dependencies:
- dependency-name: Mindscape.Raygun4Net.NetCore
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

src/Splat.Raygun/Splat.Raygun.csproj

@@ -15,17 +15,17 @@
   <Choose>
     <When Condition=" $(TargetFramework.StartsWith('net7'))">
       <ItemGroup>
-        <PackageReference Include="Mindscape.Raygun4Net.NetCore" Version="6.4.3" />
+        <PackageReference Include="Mindscape.Raygun4Net.NetCore" Version="7.0.0" />
       </ItemGroup>
     </When>
     <When Condition=" $(TargetFramework.StartsWith('net6'))">
       <ItemGroup>
-        <PackageReference Include="Mindscape.Raygun4Net.NetCore" Version="6.4.3" />
+        <PackageReference Include="Mindscape.Raygun4Net.NetCore" Version="7.0.0" />
       </ItemGroup>
     </When>
     <When Condition=" $(TargetFramework.StartsWith('netstandard')) ">
       <ItemGroup>
-        <PackageReference Include="Mindscape.Raygun4Net.NetCore" Version="6.4.3" />
+        <PackageReference Include="Mindscape.Raygun4Net.NetCore" Version="7.0.0" />
       </ItemGroup>
     </When>
     <When Condition=" $(TargetFramework.StartsWith('net4')) ">