Bump RDoc to 7.0.1 (#15628) #681

Job	Run time
omnibus compilations, trigger	3s
omnibus compilations, #5	28m 47s
omnibus compilations, #1	30m 9s
omnibus compilations, #6	30m 23s
omnibus compilations, #7	35m 42s
omnibus compilations, #4	28m 19s
omnibus compilations, #3	30m 3s
omnibus compilations, #2	1m 35s
omnibus compilations, #8	29m 4s
omnibus compilations, #12	15m 0s
omnibus compilations, #10	29m 34s
omnibus compilations, #9	8m 52s
omnibus compilations, #11	24m 58s
omnibus compilations, result	12s
	4h 52m 41s

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