graphics/openexr, ilmbase: security update to v2.5.5
https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v2.5.5
"Specific OSS-fuzz issues include:
OSS-fuzz #30291 Timeout in openexr_exrcheck_fuzzer OSS-fuzz #29106 Heap-buffer-overflow in Imf_2_5::FastHufDecoder::decode OSS-fuzz #28971 Undefined-shift in Imf_2_5::cachePadding OSS-fuzz #29829 Integer-overflow in Imf_2_5::DwaCompressor::initializeBuffers OSS-fuzz #30121 Out-of-memory in openexr_exrcheck_fuzzer"
Bump PORTREVISION of ports that directly depend on openexr and/or ilmbase.
MFH: 2021Q1
Security: 98044aba-6d72-11eb-aed7-1b1b8a70cc8b