downgrade zig version to eowyn version

It is just 2 days behind so all features are already present for the new labeled switch test

README.md

@@ -88,8 +88,8 @@ that if you update one, you may need to also update the other.
 
 ### Version Changes
 
-Version-0.14.0-dev.1575
-* *2024-09-16* zig 0.14.0-dev.1575 - introduction of labeled switch, see [#21257](https://github.com/ziglang/zig/pull/21257)
+Version-0.14.0-dev.1573
+* *2024-09-16* zig 0.14.0-dev.1573 - introduction of labeled switch, see [#21257](https://github.com/ziglang/zig/pull/21257)
 * *2024-09-02* zig 0.14.0-dev.1409 - several changes in std.builtin, see [#21225](https://github.com/ziglang/zig/pull/21225)
 * *2024-08-04* zig 0.14.0-dev.1224 - several changes in build system, see [#21115](https://github.com/ziglang/zig/pull/21115)
 * *2024-08-04* zig 0.14.0-dev.839 - several changes in build system, see [#20580](https://github.com/ziglang/zig/pull/20580), [#20600](https://github.com/ziglang/zig/issues/20600)

build.zig

@@ -15,7 +15,7 @@ const print = std.debug.print;
 //     1) Getting Started
 //     2) Version Changes
 comptime {
-    const required_zig = "0.14.0-dev.1575";
+    const required_zig = "0.14.0-dev.1573";
     const current_zig = builtin.zig_version;
     const min_zig = std.SemanticVersion.parse(required_zig) catch unreachable;
     if (current_zig.order(min_zig) == .lt) {