Bump EntityFramework from 6.4.0 to 6.4.4

Bumps [EntityFramework](https://github.com/dotnet/ef6) from 6.4.0 to 6.4.4.
- [Release notes](https://github.com/dotnet/ef6/releases)
- [Commits](https://github.com/dotnet/ef6/commits)

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

src/Akka.Quartz.Actor.IntegrationTests/Akka.Quartz.Actor.IntegrationTests.csproj

@@ -8,7 +8,7 @@
     <PackageReference Include="xunit.runner.visualstudio" Version="$(XunitVersion)" />
     <PackageReference Include="xunit" Version="$(XunitVersion)" />
     <PackageReference Include="Akka.TestKit.Xunit2" Version="1.4.1" />
-    <PackageReference Include="EntityFramework" Version="6.4.0" />
+    <PackageReference Include="EntityFramework" Version="6.4.4" />
     <PackageReference Include="Microsoft.Data.Sqlite.Core" Version="3.1.2" />
     <PackageReference Include="Quartz" Version="$(QuartzVersion)" />
     <PackageReference Include="SQLitePCLRaw.bundle_green" Version="2.0.2" />