lavapipe: Set ICD api_version to 1.3

Lavapipe has been 1.3 compliant for a couple years, now.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30024>

src/gallium/targets/lavapipe/meson.build

@@ -23,7 +23,7 @@ endif
 
 icd_command = [
   prog_python, '@INPUT0@',
-  '--api-version', '1.1', '--xml', '@INPUT1@',
+  '--api-version', '1.3', '--xml', '@INPUT1@',
   '--lib-path', join_paths(icd_lib_path, icd_file_name),
   '--out', '@OUTPUT@',
 ]