feat: add support for Python 3.13 #4609

Job	Run time
slotscheck	21s
mypy	1m 14s
pyright	48s
Test server integration (uvicorn<0.27.0)	30s
Test Minimal Application with Base Dependencies	15s
Test Minimal Pydantic 1 application	41s
test-platform-compat	0s
Test server integration (uvicorn>=0.27.0)	31s
validate	17s
test (3.10) / test	22s
test (3.11) / test	24s
test (3.12) / test	25s
test (3.13) / test	36s
test (3.9) / test	26s
test (3.8) / test	27s
build-docs	2m 36s
codeql	0s
sonar	0s
upload-test-coverage	0s
	9m 53s

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