chore(deps): Bump postgres from 14 to 16 in /demo/docker-test/db

[dependabot[bot]]

Bumps postgres from 14 to 16.

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[sonarqubecloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[jamshale]

Will upgrade via https://github.com/hyperledger/aries-cloudagent-python/pull/3004

[dependabot[bot]]

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