Bump Microsoft.OpenApi from 2.7.5 to 3.8.0

---
updated-dependencies:
- dependency-name: Microsoft.OpenApi
  dependency-version: 3.8.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

ErsatzTV/ErsatzTV.csproj

@@ -45,7 +45,7 @@
         <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="10.0.9" />
         <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="10.0.9" />
         <!-- Override transitive Microsoft.OpenApi 2.0.0 (GHSA-v5pm-xwqc-g5wc) from Microsoft.AspNetCore.OpenApi -->
-        <PackageReference Include="Microsoft.OpenApi" Version="2.7.5" />
+        <PackageReference Include="Microsoft.OpenApi" Version="3.8.0" />
         <PackageReference Include="Microsoft.AspNetCore.SpaServices.Extensions" Version="10.0.9" />
         <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="9.0.15">
             <PrivateAssets>all</PrivateAssets>