[openssl/openssl] bc07d3: Add PEM fuzzer

[Kurt Roeckx]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: bc07d371865095643ec4f7190f26b174830a2f02
      https://github.com/openssl/openssl/commit/bc07d371865095643ec4f7190f26b174830a2f02
  Author: Kurt Roeckx <kurt at roeckx.be>
  Date:   2023-06-01 (Thu, 01 Jun 2023)

  Changed paths:
    M fuzz/build.info
    A fuzz/pem.c
    A test/recipes/99-test_fuzz_pem.t

  Log Message:
  -----------
  Add PEM fuzzer

This fuzzer can find CVE-2022-4450

Reviewed-by: Matt Caswell <matt at openssl.org>
Reviewed-by: Paul Dale <pauli at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/20242)