Upgrade to Jest 27

[mxro]

For #148

• Upgrading all packages to use Jest 27
• Ensuring that all unit tests run in the pipeline (unit tests in apps and docs workspaces did not run previously)
• Fixing unit tests that stopped working (jest.setTimeout) had to be placed outside the describe function body
• Changing the build for branches, so that unit tests for the different workspaces are run in parallel
• Resolving an issue with running esbuild in Jest tests