Added support for python 3.13 - Removed ubber bound #285

Job	Run time
test (ubuntu-20.04, 3.7)	40s
test (ubuntu-20.04, 3.8)	30s
test (ubuntu-20.04, 3.9)	30s
test (ubuntu-20.04, 3.10)	33s
test (ubuntu-20.04, 3.11)	25s
test (ubuntu-20.04, 3.12)	35s
test (ubuntu-20.04, 3.13)	43s
test (ubuntu-20.04, pypy3.8)	1m 35s
test (ubuntu-20.04, pypy3.9)	43s
test (ubuntu-20.04, pypy3.10)	42s
test (ubuntu-22.04, 3.7)	30s
test (ubuntu-22.04, 3.8)	26s
test (ubuntu-22.04, 3.9)	35s
test (ubuntu-22.04, 3.10)	25s
test (ubuntu-22.04, 3.11)	28s
test (ubuntu-22.04, 3.12)	30s
test (ubuntu-22.04, 3.13)	1m 0s
test (ubuntu-22.04, pypy3.8)	1m 16s
test (ubuntu-22.04, pypy3.9)	51s
test (ubuntu-22.04, pypy3.10)	44s
test (macos-13, 3.7)	1m 35s
test (macos-13, 3.8)	1m 1s
test (macos-13, 3.9)	1m 11s
test (macos-13, 3.10)	1m 3s
test (macos-13, 3.11)	1m 4s
test (macos-13, 3.12)	55s
test (macos-13, 3.13)	1m 28s
test (macos-13, pypy3.8)	1m 13s
test (macos-13, pypy3.9)	1m 9s
test (macos-13, pypy3.10)	1m 27s
test (windows-2022, 3.7)	2m 20s
test (windows-2022, 3.8)	2m 16s
test (windows-2022, 3.9)	2m 3s
test (windows-2022, 3.10)	2m 25s
test (windows-2022, 3.11)	2m 46s
test (windows-2022, 3.12)	2m 24s
test (windows-2022, 3.13)	3m 30s
test (windows-2022, pypy3.8)	2m 31s
test (windows-2022, pypy3.9)	1m 48s
test (windows-2022, pypy3.10)	2m 8s
builder_pypandoc	11s
builder_pypandoc_binary (macos-14)	44s
builder_pypandoc_binary (windows-2022)	2m 43s
builder_pypandoc_binary (ubuntu-22.04)	3m 27s
publisher_latest	1s
publisher_release	1s
	57m 5s

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