Update Postgres version for Jira (atlassian#811)

Remove Elasticsearch from install script and tests (atlassian#808)

* Remove Elasticsearch from install script and tests

* Remove commented out line

* Update var name

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Co-authored-by: Yevhen Ivantsov <yivantsov@atlassian.com>

Prepare release 1.20.0 (atlassian#805)

Co-authored-by: bianchi2 <bianchi2@users.noreply.github.com>

Prepare release 1.20.0 (atlassian#805)

Co-authored-by: bianchi2 <bianchi2@users.noreply.github.com>

Prepare release 1.20.0 (atlassian#805)

Co-authored-by: bianchi2 <bianchi2@users.noreply.github.com>

Prepare release 1.20.0 (atlassian#805)

Co-authored-by: bianchi2 <bianchi2@users.noreply.github.com>

Prepare release 1.20.0 (atlassian#805)

Co-authored-by: bianchi2 <bianchi2@users.noreply.github.com>

Prepare release 1.20.0 (atlassian#805)

Co-authored-by: bianchi2 <bianchi2@users.noreply.github.com>

Prepare release 1.19.0 (atlassian#791)

Co-authored-by: bianchi2 <bianchi2@users.noreply.github.com>

Prepare release 1.19.0 (atlassian#791)

Co-authored-by: bianchi2 <bianchi2@users.noreply.github.com>