Upgrade express validator to v4

client/package.json

client/src/index.html

client/yarn.lock

package.json

server.ts

server/helpers/custom-validators/misc.ts

server/helpers/custom-validators/pods.ts

server/helpers/custom-validators/remote/videos.ts

server/helpers/custom-validators/users.ts

server/helpers/custom-validators/videos.ts

server/middlewares/validators/pagination.ts

server/middlewares/validators/pods.ts

server/middlewares/validators/remote/signature.ts

server/middlewares/validators/remote/videos.ts

server/middlewares/validators/sort.ts

server/middlewares/validators/users.ts

server/middlewares/validators/utils.ts

server/middlewares/validators/videos.ts

yarn.lock