Tagged release v3.20.0

ab7946c feat: bump prozorro-tools version
08f0ea2 fix: add retry for reindex data Issue: prozorro-sale/search#36
7e27fc9 fix: add startup delay for reindex data Issue: prozorro-sale/search#36
0a3a822 fix: delete hook on reindex job Issue: prozorro-sale/search#36
57e3e61 fix: reindex job namespace Issue: prozorro-sale/search#36
71825db Feat: update dependency Issue: prozorro-sale/search#36
1dd1573 Feat: change elastic index name generator Issue: prozorro-sale/search#36
f5203db fix(monitoring): enable prometheus
17455d7 fix(elastic): change index name
02fffad fix(HELM): change imagePullPolicy for job
2b0c680 fix(HELM): change elastic node roles
36db414 fix(HELM): change hook-delete-policy
8397ecf fix(HELM): change job weight
f3e5b2f fix(HELM): change client.image
34efb22 fix(HELM): change INITIAL_SYNC value
2ad9027 Feat(CI/CD): change makefile
16d3f4e fix(es): add shuttdown es client logic when app closing
a49ab1d feat: add joob to reindex data on each deployment or upgrade
abfdf37 refactor: separate global procedure elastic index