Fix Python interpreter not found error #1170

Job	Run time
Lint	1m 33s
Check Python types	3m 8s
Test Positron IPyKernel (ubuntu-latest, 3.8)	2m 55s
Test Minimum Positron IPyKernel Dependencies (ubuntu-latest, 3.8)	3m 18s
Test Positron IPyKernel (macos-latest, 3.9)	2m 42s
Python Tests (ubuntu-latest, 3.8)	1m 42s
Test Positron IPyKernel (windows-latest, 3.10)	10m 29s
Python Tests (ubuntu-latest, 3.12)	1m 40s
Test Positron IPyKernel (ubuntu-latest, 3.11)	2m 49s
Test Positron IPyKernel (ubuntu-latest, 3.12)	2m 42s
Test TypeScript (ubuntu-latest, 3.x, ts-unit)	3m 0s
Test TypeScript (ubuntu-latest, 3.x, functional)	1m 56s
Test TypeScript (macos-latest, 3.x, ts-unit)	3m 5s
Test TypeScript (macos-latest, 3.x, venv)	2m 50s
Test TypeScript (macos-latest, 3.x, single-workspace)	2m 50s
Test TypeScript (macos-latest, 3.x, debugger)	2m 21s
Test TypeScript (macos-latest, 3.x, functional)	2m 2s
Test TypeScript (macos-latest, 3.x, smoke)	3m 54s
Test TypeScript (windows-latest, 3.x, ts-unit)	6m 49s
Test TypeScript (windows-latest, 3.x, functional)	8m 20s
	1h 10m 5s

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