v8: replace Buffer with FastBuffer in deserialize
Replace the Buffer constructor with a FastBuffer in v8.deserialize in order to avoid calling the Buffer constructor and thus triggering a deprecation warning from code inside the core.
Fixes: https://github.com/nodejs/node/issues/21181
Checklist
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make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
tests and/or benchmarks are included -
documentation is changed or added -
commit message follows commit guidelines
/cc @nodejs/buffer @addaleax