gh-40922: bump ninja to 1.13.1
    
a long overdue update - in particular, to version compatible with the
make's jobobserver
Appears to reduce/eliminate doctest breakage due to warnings about
jobobserver.
Thanks @orlitzky for pointing it out


### 📝 Checklist

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- [x] The description explains in detail what this PR is about.
- [ ] I have linked a relevant issue or discussion.
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- [ ] I have updated the documentation and checked the documentation
preview.

### ⌛ Dependencies

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URL: #40922
Reported by: Dima Pasechnik
Reviewer(s):

Author: Release Manager

build/pkgs/ninja_build/checksums.ini

@@ -1,4 +1,4 @@
 tarball=ninja_build-VERSION.tar.gz
-sha1=f3a1a28e0e427be58b4f2ff2e61b7a4a0e4f0c24
-sha256=821bdff48a3f683bc4bb3b6f0b5fe7b2d647cf65d52aeb63328c91a6c6df285a
+sha1=2a4d0b3e47b7bcd7468524bf17318e814c6a3984
+sha256=f0055ad0369bf2e372955ba55128d000cfcc21777057806015b45e4accbebf23
 upstream_url=https://github.com/ninja-build/ninja/archive/refs/tags/vVERSION.tar.gz

build/pkgs/ninja_build/package-version.txt

@@ -1 +1 @@
-1.12.1
+1.13.1