deps: backport fix to v8 bug in toUpper('ç')

Checklist

• make -j8 test (UNIX), or vcbuild test nosign (Windows) passes
• tests and/or benchmarks are included
• commit message follows commit guidelines

Affected core subsystem(s)

deps - v8 floating patch

Description of change

• add test for ç/Ç in various locales
• work around v8 bug per @jungshik https://bugs.chromium.org/p/v8/issues/detail?id=5681

Fixes: https://github.com/nodejs/node/issues/9785