Bump Microsoft.AspNetCore.OpenApi from 8.0.14 to 8.0.21

---
updated-dependencies:
- dependency-name: Microsoft.AspNetCore.OpenApi
  dependency-version: 8.0.21
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

aspnet/MyXProject.Web/MyXProject.Web.csproj

@@ -9,7 +9,7 @@
     <ItemGroup>
         <PackageReference Include="FirebaseAdmin" Version="3.4.0" />
         <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="8.0.19" />
-        <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="8.0.14"/>
+        <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="8.0.21"/>
         <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.14">
           <PrivateAssets>all</PrivateAssets>
           <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>