v11.5.7

GPUArrays v11.5.7

Diff since v11.5.6

• Support findmin(f, itr) and findmax(f, itr) on complex-valued arrays if f's codomain is entirely real
• Reduce the time taken by the testsuite by merging similar tests related to mapreducedim

Merged pull requests:

• Reduce testsuite runtime by merging similar reduction testsets (#728) (@christiangnrd)
• Run Metal tests with --all (#736) (@christiangnrd)
• Update Buildkite pipeline for the new JuliaGPU cluster (#737) (@maleadt)
• Let findmax/min work with Complex and real-valued f (#738) (@kshyatt)
• Update Project.toml (#740) (@kshyatt)