fix(python): correct flavor for macos-x64

[jdx]

Fixes #1774

[github-actions]

Package	Line Rate	Complexity	Health
src	87%	0	✔
src.cli	83%	0	✔
src.cli.alias	90%	0	✔
src.cli.args	96%	0	✔
src.cli.backends	95%	0	✔
src.cli.cache	95%	0	✔
src.cli.config	93%	0	✔
src.cli.direnv	80%	0	✔
src.cli.plugins	87%	0	✔
src.cli.settings	93%	0	✔
src.cli.sync	29%	0	❌
src.cli.tasks	68%	0	➖
src.config.config_file	91%	0	✔
src.config	88%	0	✔
src.forge	67%	0	➖
src.plugins.core	55%	0	➖
src.plugins	84%	0	✔
src.shell	98%	0	✔
src.toolset	83%	0	✔
src.ui	77%	0	✔
Summary	82% (14058 / 17205)	0	✔

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ -0.02%	✅ 100.00%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (343f985)	17205	14061	81.73%
Head commit (e1ae4cc)	17205 (+0)	14058 (-3)	81.71% (-0.02%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#2104)	1	1	100.00%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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