petitboot: Update to v1.10.3

v1.10.3 includes a change to improve shell responsiveness (in
particular, SIGINT handling).

Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
diff --git a/openpower/package/petitboot/petitboot.hash b/openpower/package/petitboot/petitboot.hash
index 3e2a502..e9c773d 100644
--- a/openpower/package/petitboot/petitboot.hash
+++ b/openpower/package/petitboot/petitboot.hash
@@ -1 +1 @@
-sha256 0bb5bd255860e5a4f18e08b4c1ac61166ccae9572d1a75083015bb209903c577  petitboot-v1.10.2.tar.gz
+sha256 d2ae58adb8f69b5da854de890c1bbe12008c627b1921cd1c686ead642a134867  petitboot-v1.10.3.tar.gz