fix(ci): remove file: overrides for jsnosqlc-core/memory from root package.json

Root package.json had jsnosqlc-core and jsnosqlc-memory as file: dependencies
pointing at ../jsnoslqc/packages/* (local sibling repo). npm install recorded
these as link entries in the lockfile, causing npm ci to fail on CI where the
sibling directory does not exist.

Both packages are published on npm at ^1.0.0 and are listed as direct
dependencies of boot-jsnosqlc, which resolves them correctly via the registry.

Author: craigparra