Bug 1656403: bump maximum gkrust-shared rust version to 1.47 r=glandium

1.44 is too tight a restriction, and we know that 1.47 will still have
the APIs we depend on.

Differential Revision: https://phabricator.services.mozilla.com/D87650

toolkit/library/rust/shared/build.rs

@@ -9,7 +9,7 @@ use rustc_version::{version, Version};
 fn main() {
     let ver = version().unwrap();
     let mut bootstrap = false;
-    let max_oom_hook_version = Version::parse("1.44.0-alpha").unwrap();
+    let max_oom_hook_version = Version::parse("1.47.0-alpha").unwrap();
 
     if ver >= Version::parse("1.28.0-alpha").unwrap() && ver < max_oom_hook_version {
         println!("cargo:rustc-cfg=feature=\"oom_with_hook\"");