refactor: Update selfSigned flag in LeaderboardController

chore: Update package version to 0.5.1 in package.json and package-lo…

…ck.json

chore: Update package version to 0.5.0 in package.json and package-lo…

…ck.json

chore: Update `api` version to 0.4.9 in package-lock.json and package…

….json

Update `api` version to 0.4.8 in package-lock.json and package.json

Update `api` version to 0.4.7 in package-lock.json and package.json

chore: Update `api` version to 0.4.6 in package-lock.json and package…

….json

chore: Update `api` version to 0.4.5 in package-lock.json and package…

….json

Update `api` version to 0.4.4 in package-lock.json and package.json

Update `api` version to 0.4.3