Add a task to easily release a new EigenPy version #23

Job	Run time
ubuntu-latest - Env all Release	12m 12s
ubuntu-latest - Env all Release -mavx2	13m 14s
ubuntu-latest - Env all Debug	18m 44s
ubuntu-latest - Env all Debug -mavx2	19m 46s
ubuntu-latest - Env all-py39 Release	34s
ubuntu-latest - Env all-py39 Release -mavx2	46s
ubuntu-latest - Env all-py39 Debug	2m 40s
ubuntu-latest - Env all-py39 Debug -mavx2	2m 44s
macos-latest - Env all Release	8m 29s
macos-latest - Env all Debug	12m 11s
macos-latest - Env all-py39 Release	48s
macos-latest - Env all-py39 Debug	4m 45s
macos-13 - Env all Release	19m 44s
macos-13 - Env all Debug	9m 50s
macos-13 - Env all-py39 Release	2m 5s
macos-13 - Env all-py39 Debug	12m 13s
windows-latest - Env all Release	20m 46s
windows-latest - Env all-clang-cl Release	2m 37s
check-macos-linux-windows-pixi	3s
	2h 44m 11s

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