apertis-abi-compare: sort headers and libraries lists

Having these headers and libraries lists in a not reproducible order
can generate random errors with abi-compliance-checker

Signed-off-by: Dylan Aïssi <dylan.aissi@collabora.com>

tools/apertis-abi-compare

@@ -62,8 +62,10 @@ def define_xml(pkgs_path, version):
 
         my_headers = list(pathlib.Path(pkgs_path).glob('usr/include/**/*.h'))
         my_headers = list(map(str, my_headers))
+        my_headers = sorted(my_headers)
         my_libs = list(pathlib.Path(pkgs_path).glob('**/*.so'))
         my_libs = list(map(str, my_libs))
+        my_libs = sorted(my_libs)
 
         generate_xml(xml_descr, version, my_headers, my_libs)
         print(f'INFO: XML descriptor generated: {xml_descr}')