Add Pdb.rlcompleter added in Python 3.13.8 #13674

Job	Run time
stubtest: stdlib (ubuntu-latest, 3.10)	1m 4s
stubtest: stdlib (ubuntu-latest, 3.13)	1m 4s
stubtest: stdlib (ubuntu-latest, 3.11)	57s
stubtest: stdlib (windows-latest, 3.11)	2m 23s
stubtest: stdlib (ubuntu-latest, 3.9)	1m 11s
stubtest: stdlib (ubuntu-latest, 3.14)	1m 6s
stubtest: stdlib (ubuntu-latest, 3.12)	1m 2s
stubtest: stdlib (windows-latest, 3.9)	2m 5s
stubtest: stdlib (windows-latest, 3.12)	2m 0s
stubtest: stdlib (macos-latest, 3.11)	49s
stubtest: stdlib (windows-latest, 3.14)	2m 30s
stubtest: stdlib (windows-latest, 3.13)	2m 40s
stubtest: stdlib (macos-latest, 3.10)	1m 15s
stubtest: stdlib (macos-latest, 3.9)	1m 14s
stubtest: stdlib (macos-latest, 3.13)	1m 19s
stubtest: stdlib (macos-latest, 3.14)	1m 5s
stubtest: stdlib (windows-latest, 3.10)	2m 58s
stubtest: stdlib (macos-latest, 3.12)	43s
	27m 25s

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