multimedia/libbluray: update to version 1.5.1

This is an important bug-fix release:

• Fix out-of-bounds write in graphics processor on invalid input
• Fix possible buffer overread when parsing PTS/DTS in m2ts demuxer
• Fix NULL dereference in playlist subpath cleanup
• Fix chapter and playmark search range checks
• Fix invalid memory access with out-of-range angles on multi-angle discs
• Harden clip info (CLPI) parsing against out-of-range indexes and empty tables
• Harden RLE decoding against integer overflow and oversized allocations
• Detect seek/read failures in the bitstream reader
• Fix branch condition (BC) instruction in HDMV VM
• Avoid undefined behaviour in HDMV VM shifts and sound data parsing
• BD-J: Fix DSMCCObject unload condition
• BD-J: Restrict visibility of EventManager and NPTRate constructors