Update dependencies

[patrickarlt]

Now that we are free from Karma and Jasmine (yay @dixonyant!) I've updated the dependencies for TypeScript, TypeDoc, ESLint and Rollup. This fixes problems with peer dependencies and means we can go back to normal npm install instead of npm install --legacy-peer-deps.

This PR also resolves a bunch of random linting errors that came up as a result of updating the linting libraries.

This needs to get tested to make sure the output of the new version of typedoc works with the doc framework before we merge this.

[github-actions]

Package	Line Rate	Branch Rate	Complexity	Health
arcgis-rest-basemap-sessions.src	100%	100%	0	✔
arcgis-rest-basemap-sessions.src.utils	100%	100%	0	✔
arcgis-rest-demographics.src	100%	100%	0	✔
arcgis-rest-developer-credentials.src	100%	100%	0	✔
arcgis-rest-developer-credentials.src.shared	100%	100%	0	✔
arcgis-rest-elevation.src	100%	100%	0	✔
arcgis-rest-feature-service.src	100%	100%	0	✔
arcgis-rest-geocoding.src	100%	100%	0	✔
arcgis-rest-places.src	100%	100%	0	✔
arcgis-rest-portal.src.groups	100%	100%	0	✔
arcgis-rest-portal.src.items	100%	100%	0	✔
arcgis-rest-portal.src.orgs	100%	100%	0	✔
arcgis-rest-portal.src.services	100%	100%	0	✔
arcgis-rest-portal.src.sharing	100%	100%	0	✔
arcgis-rest-portal.src.users	100%	100%	0	✔
arcgis-rest-portal.src.util	100%	100%	0	✔
arcgis-rest-request.src	100%	100%	0	✔
arcgis-rest-request.src.types	100%	100%	0	✔
arcgis-rest-request.src.utils	100%	100%	0	✔
arcgis-rest-routing.src	100%	100%	0	✔
Summary	100% (2186 / 2186)	100% (1217 / 1217)	0	✔

Minimum allowed line rate is 100%

[patrickarlt]

Making this a draft while I figure out TypeDoc issues.