Add support for Python 3.13 #109

Job	Run time
Python 2.7	30s
Python 2.7	30s
Python 2.7	30s
Latest Python Stable Release (3.12)	0s
Latest Python Stable Release (3.12)	1s
Latest Python Stable Release (3.12)	31s
Older Python 3 Releases (3.6)	14s
Older Python 3 Releases (3.6)	14s
Older Python 3 Releases (3.6)	14s
Older Python 3 Releases (3.7)	14s
Older Python 3 Releases (3.7)	14s
Older Python 3 Releases (3.7)	14s
Older Python 3 Releases (3.8)	1s
Older Python 3 Releases (3.8)	14s
Older Python 3 Releases (3.8)	14s
Older Python 3 Releases (3.9)	8s
Older Python 3 Releases (3.9)	8s
Older Python 3 Releases (3.9)	8s
Older Python 3 Releases (3.10)	14s
Older Python 3 Releases (3.10)	14s
Older Python 3 Releases (3.10)	14s
Older Python 3 Releases (3.11)	1s
Older Python 3 Releases (3.11)	10s
Older Python 3 Releases (3.11)	10s
Older Python 3 Releases (3.13)	24s
Older Python 3 Releases (3.13)	24s
Older Python 3 Releases (3.13)	24s
	6m 34s

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