Bumping Pillow to non-vulnerable version

* The previous version of Pillow was flagged
  as vulnerable, so this change bumps the version

Change-Id: I176c12c4df266de8f871b58efdcc277b090a31fa
Signed-off-by: Alex Tawse <alex.tawse@arm.com>
diff --git a/scripts/py/requirements.txt b/scripts/py/requirements.txt
index a64bcf8..1bd9d0e 100644
--- a/scripts/py/requirements.txt
+++ b/scripts/py/requirements.txt
@@ -8,7 +8,7 @@
 MarkupSafe==2.0.1
 numba==0.56.4
 numpy==1.23.5
-Pillow==9.2.0
+Pillow==10.3.0
 pycparser==2.20
 resampy==0.4.2
 scipy==1.10.1