fmt vulnerabilities (OSS-Fuzz)

3 vulnerabilities.

• fmt OSS-Fuzz Heap-buffer-overflow in fmt::v8::detail::big_decimal_fp fmt::v8::detail::write_padded< OSV-2022-168 Fix available No scoreFebruary 19, 2022
• fmt OSS-Fuzz Stack-buffer-overflow in fmt::v8::basic_memory_buffer<unsigned int, 32ul, std::__1::allocator<unsigned in OSV-2022-165 Fix available No scoreFebruary 18, 2022
• fmt OSS-Fuzz Dynamic-stack-buffer-overflow in fmt::v8::detail::dragonbox::umul192_upper64 OSV-2021-991 Fix available No scoreJuly 14, 2021