[v3] Forward-port v2 PRs

[crazywhalecc]

• remove workaround for zig < 0.16 #1105
• fix libkrb5 and decimal shard build #1107
• Add linux mint to ubuntu/debian variants #1109
• fix aarch64 shared extensions segfault with zig 0.16.0 #1110
• patch 8.3 src to use avx512 cache vars #1115
• Fix libde265 on arm64 macOS asm build bug #1117
• Add 'date', 'lexbor', 'random', and 'uri' to extensions #1120