disable AVR test since it doesn't work

Author: RalfJung

src/tools/miri/ci/ci.sh

@@ -159,7 +159,8 @@ case $HOST_TARGET in
     TEST_TARGET=wasm32-unknown-unknown run_tests_minimal no_std empty_main wasm # this target doesn't really have std
     TEST_TARGET=thumbv7em-none-eabihf  run_tests_minimal no_std
     # Custom target JSON file
-    TEST_TARGET=tests/avr.json MIRI_NO_STD=1 run_tests_minimal no_std
+    # FIXME: disabled due to <https://github.com/rust-lang/rust/issues/130818>.
+    #TEST_TARGET=tests/avr.json MIRI_NO_STD=1 run_tests_minimal no_std
     ;;
   i686-pc-windows-msvc)
     # Host