Tagged release v3.30.0

ca7c6f43 Fix timezone converting bug during x_prepaymentDetails date validation
abe0f6a2 Freeze pyjwt to 1.7.1
43728898 Add auctionPeriod.endDate to timber initial qualification procedure
f4d81ada Move helm build to helm3
210c2d49 Proxy award document actions to the award state machine
377fbcff Refactored prolongation endpoints, added awardId check in procedure
97a7ddce Minor swagger yaml fixes with correct references
e9182302 Returned old swagger schemas without collapsing, in order to fix model referencing
43743f01 Changed timber-english legal name class
54e53dc8 Forbidd adding and updating document of deleted bid
0ada3300 Fix 500 on contract creation because of incorrect data structure
edd04a1f Use separate configMap for holidays date config
22947cb7 Remove working dates and holidays from procedure configMap