Fix kokoro darwin build.

Bug: 278602456
Change-Id: I58a7668f2b1e83c7ba8436f54049055e114699f9
diff --git a/kokoro/build.py b/kokoro/build.py
index 86080a8..37a5bc1 100755
--- a/kokoro/build.py
+++ b/kokoro/build.py
@@ -92,7 +92,7 @@
         # Linker will embed this path to all binaries linking this library.
         # Since configure does not give us a chance to set -install_name, we have
         # to edit the library afterwards.
-        libpython = 'libpython3.10.dylib'
+        libpython = 'libpython3.11.dylib'
         subprocess.check_call(['make',
                                '-j{}'.format(multiprocessing.cpu_count()),
                                libpython],