Bump ext/flecs from d24a9e1 to f9c7c3d (#193)

* Bump ext/flecs from `d24a9e1` to `f9c7c3d`

Bumps [ext/flecs](https://github.com/SanderMertens/flecs) from `d24a9e1` to `f9c7c3d`.
- [Release notes](https://github.com/SanderMertens/flecs/releases)
- [Commits](SanderMertens/flecs@d24a9e1...f9c7c3d)

---
updated-dependencies:
- dependency-name: ext/flecs
  dependency-type: direct:production
...

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

* Update C# bindings

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: lithiumtoast <519592+lithiumtoast@users.noreply.github.com>

src/cs/production/Flecs.Core/Generated/AssemblyAttributes.gen.cs

@@ -1,7 +1,7 @@
 // To disable generating this file set `isEnabledGenerateAssemblyAttributes` to `false` in the config file for generating C# code.
 // <auto-generated>
-//  This code was generated by the following tool on 2023-07-11 21:52:31 GMT-04:00:
-//      https://github.com/bottlenoselabs/c2cs (v6.0.7.0)
+//  This code was generated by the following tool on 2023-07-23 13:42:09 GMT+00:00:
+//      https://github.com/bottlenoselabs/c2cs (v6.1.2.0)
 //
 //  Changes to this file may cause incorrect behavior and will be lost if the code is regenerated.
 // </auto-generated>
@@ -11,7 +11,7 @@
 #nullable enable
 #pragma warning disable CS1591
 #pragma warning disable CS8981
-global using bottlenoselabs.C2CS.Runtime;
+using bottlenoselabs.C2CS.Runtime;
 using System;
 using System.Collections.Generic;
 using System.Globalization;