Upgrade node from 14 to 16

[joaoluis-pdm]

As node 14 has no longer active maintenance fixes, FGT image should upgrade from 14 to 16.
See also #74 (comment)

[joaoluis-pdm]

Trying node v16.14.2.
The first problem appears during npm install:

jpsl@PDM-00781:/export/home/jpsl/develop/PharmaLedger/fgt-workspace$ npm i
npm WARN EBADENGINE Unsupported engine {
npm WARN EBADENGINE   package: '[email protected]',
npm WARN EBADENGINE   required: { node: '~14', npm: '~6' },
npm WARN EBADENGINE   current: { node: 'v16.14.2', npm: '8.5.0' }
npm WARN EBADENGINE }
npm WARN deprecated [email protected]: This module is no longer maintained, try this instead:
npm WARN deprecated   npm i nyc
npm WARN deprecated Visit https://istanbul.js.org/integrations for other alternatives.
...

[joaoluis-pdm]

The push to master change in octopus-freeze.json above are required to test the build of docker images from git master.

[joaoluis-pdm]

Tests by running

node --unhandled-rejections=strict wsCreateStuff.js --sleep=80000

on a local docker-compose succeed. The upgrade to node 16 should be considered complete and closed, and available for the next release.