Bump numba from 0.48.0 to 0.51.0

Bumps numba from 0.48.0 to 0.51.0.

Commits

• 3a14664 Merge pull request #6124 from stuartarchibald/wip/CHANGELOG_051_update2
• 29f579b Merge pull request #6123 from gmarkall/grm-issue-6121
• f2f5431 Merge pull request #6120 from numba/temp/bump_llvmlite
• 2d02530 Pin to llvmlite 0.34.*
• ac48aee Bump to llvmlite 0.34
• 5c2fec4 Merge pull request #6117 from stuartarchibald/wip/CHANGELOG_051_update
• 078a838 Merge pull request #6116 from sklam/fix/iss6102
• 8f2a8a2 Merge pull request #6109 from stuartarchibald/fix/6094_b
• 01f0fae Merge pull request #6111 from stuartarchibald/fix/6094_a
• 993612a Merge pull request #6107 from sklam/fix/iss6095
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