Bump jinja2 from 3.0.3 to 3.1.3 in /docs #2624

Job	Run time
Basic Checks	3m 18s
Unit Tests	6m 7s
Integration Tests (raft)	12m 24s
Integration Tests (pvtdata)	11m 44s
Integration Tests (pvtdatapurge)	5m 58s
Integration Tests (ledger)	13m 20s
Integration Tests (lifecycle)	4m 46s
Integration Tests (e2e smartbft)	20m 42s
Integration Tests (discovery gossip devmode pluggable)	6m 4s
Integration Tests (gateway idemix pkcs11 configtx configtxlator)	18m 2s
Integration Tests (sbe nwo msp)	7m 46s
	1h 50m 11s

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