refactor: Object.assign -> object spread (#9076)

lib/config/index.ts

lib/config/massage.ts

lib/config/types.ts

lib/config/utils.ts

lib/datasource/packagist/index.ts

lib/manager/cocoapods/extract.ts

lib/manager/gradle-lite/parser.ts

lib/manager/npm/extract/index.ts

lib/platform/bitbucket/index.ts

lib/util/exec/env.ts

lib/workers/branch/get-updated.ts

lib/workers/branch/index.ts

lib/workers/repository/init/vulnerability.ts

lib/workers/repository/process/fetch.ts

lib/workers/repository/updates/generate.ts

lib/workers/types.ts