qpid-proton vulnerabilities (OSS-Fuzz)

2 vulnerabilities.

• qpid-proton OSS-Fuzz Heap-buffer-overflow in pn_buffer_append OSV-2021-1546 Fix available No scoreNovember 7, 2021
• qpid-proton OSS-Fuzz Heap-buffer-overflow in consume_list OSV-2021-1540 Fix available No scoreNovember 6, 2021