sagemathgh-39653: ninja_build: Update to 1.12.1
    
a long overdue update of ninja

### 📝 Checklist

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preview.

### ⌛ Dependencies

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URL: sagemath#39653
Reported by: Dima Pasechnik
Reviewer(s): David Coudert

Author: Release Manager

build/pkgs/ninja_build/checksums.ini

@@ -1,4 +1,4 @@
 tarball=ninja_build-VERSION.tar.gz
-sha1=938723cdfc7a6f7c8f84c83b9a2cecdf1e5e1ad3
-sha256=31747ae633213f1eda3842686f83c2aa1412e0f5691d1c14dbbcc67fe7400cea
+sha1=f3a1a28e0e427be58b4f2ff2e61b7a4a0e4f0c24
+sha256=821bdff48a3f683bc4bb3b6f0b5fe7b2d647cf65d52aeb63328c91a6c6df285a
 upstream_url=https://github.com/ninja-build/ninja/archive/refs/tags/vVERSION.tar.gz

build/pkgs/ninja_build/package-version.txt

@@ -1 +1 @@
-1.11.1
+1.12.1