scripts: Add meson 0.54 wheel to python-requirments.txt

meson 0.54 is no longer buildable from the source code with the latest
gLinux python 3.10. However, a py3-none prebuilt wheel should is still
installable. The tool is required to build the multihart boot rom ELF,
so we store the meson 0.54 wheel (638k) in GCS and install from there.

Change-Id: Idc1f664c2f504c81c4da897d936bb734ea83e6ab

python-requirements.txt

diff --git a/python-requirements.txt b/python-requirements.txt
index 48a093d..33538a6 100644
--- a/python-requirements.txt
+++ b/python-requirements.txt
@@ -14,3 +14,6 @@
 setuptools
 tempita
 wget
+
+# meson 0.54 is no longer buildable in python 3.10
+https://storage.googleapis.com/shodan-public-artifacts/meson-0.54.0-py3-none-any.whl