v1.7.3

GPUCompiler v1.7.3

Diff since v1.7.2

Merged pull requests:

• Add option for backends to run vectorization passes (#716) (@gbaraldi)
• Update Test workflows for 1.12 (#729) (@kshyatt)
• Enable Metal testing on 1.12. (#730) (@maleadt)
• Use ParallelTestRunner.jl (#731) (@vchuravy)
• Bump peter-evans/find-comment from 3 to 4 (#732) (@dependabot[bot])
• Bump peter-evans/create-or-update-comment from 4 to 5 (#733) (@dependabot[bot])
• [SPIRV] convert i128 allocas to <2 x i64> (#734) (@simeonschaub)