Postgres upgrade from v12 to v16

Kepler testnet was use 12v of postgresql but on mainnet we are migration to v16. So for continue and migrate to mainnet indexer musr convert their databases to actual version.

Step1. Full stop indexer

./tools/stop_all
./tools/tool_stop_all_projects

Step2. Setup requirements

apt install -y tmux

Step3. start migration process(convert postgres database 12 to 16. May take some time)

tmux new
mkdir .data/postgres16
docker run --rm -v .data/postgres:/var/lib/postgresql/12/data -v .data/postgres16:/var/lib/postgresql/16/data tianon/postgres-upgrade:12-to-16 --link

Step4. Finalize migration process. Please run it after previous task ic complete

mv .data/postgres .data/postgres_old
mv .data/postgres16 .data/postgres
echo 'POSTGRES_VERSION="postgres:16-alpine"' >> .PACKAGE_USE