Bump jinja2 from 3.0.3 to 3.1.3 in /docs #2625

Job	Run time
Basic Checks	3m 20s
Unit Tests	6m 26s
Integration Tests (raft)	11m 58s
Integration Tests (pvtdata)	11m 49s
Integration Tests (pvtdatapurge)	5m 52s
Integration Tests (ledger)	13m 23s
Integration Tests (lifecycle)	4m 45s
Integration Tests (e2e smartbft)	20m 56s
Integration Tests (discovery gossip devmode pluggable)	6m 13s
Integration Tests (gateway idemix pkcs11 configtx configtxlator)	17m 57s
Integration Tests (sbe nwo msp)	7m 17s
	1h 49m 56s

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