Update dreamfactory/df-core requirement from ~0.16.1 to ~0.16.2

[dependabot-preview[bot]]

Updates the requirements on dreamfactory/df-core to permit the latest version.

Release notes

*Sourced from [dreamfactory/df-core's releases](https://github.com/dreamfactorysoftware/df-core/releases).* > ## 0.16.2 > - [DP-115](https://dreamfactory.atlassian.net/browse/DP-115) Add API call scheduling capabilities to platform

Changelog

*Sourced from [dreamfactory/df-core's changelog](https://github.com/dreamfactorysoftware/df-core/blob/master/CHANGELOG.md).* > # Change Log > All notable changes to this project will be documented in this file. > This project adheres to [Semantic Versioning](http://semver.org/). > > ## [Unreleased] > > ### Fixed > - DF-1365 Fixes JWT token refresh issue > > ## [0.14.2] - 2018-02-25 > ### Fixed > - DF-1296 Allowed for wildcard handling in session permission checks > - DF-1270 Use potentially modified request in response format handling > > ## [0.14.1] - 2018-01-25 > ### Added > - DF-1275 Initial support for multi-column constraints > ### Changed > - DF-1284 Changed error message to indicate why DynamoDB schema overwrite doesn't work > ### Fixed > - DF-1287 Fixed NodeJS (and Python) script execution for large script. Made script size configurable > - Fixed CORS issues > - DF-1229 Added support for accented characters in api route > > ## [0.14.0] - 2017-12-28 > ### Added > - DF-1251 Added alternative means (external db) of authentication > - New ServiceManager methods and test cases for retrieving service names by service type or group > - Added helper function and pub-sub interface > - Added package discovery > - Added schema retrieval to some internal types to aid in automatic document generation > ### Fixed > - DF-1259 Correct OAS3 handling of comma-delimited URL query parameters > - DF-1231 Fix SQL Server migration from older versions > - ServiceRequest content-type needs to be string > - Fix CORS reference > - Corrected checkServicePermission to use access exceptions so that it applies to all checks not just REST > - Fix possible issue with content_type usage > - Fix empty header issue in cURL response > - Setting session.use_cookies to 0 explicitly > - Fixed service (logstash) to event map caching issue > ### Changed > - DF-1240 Stopped Checking for 'token' as a parameter > - DF-1186 Add exceptions for missing data when generating relationships > - DF-1254 Allow headers to be set directly in response creation > - DF-1249 Added verb override check to new middleware, moved existing first user check to df-core > - Environment utilities separated from system/environment resource > - Moved the system service and resources to dreamfactory/df-system > - Made version optional in routing (i.e. api/v2 or api/) and api and storage routes customizable > - Updated service-related interfaces for better re-usability > ... (truncated)

Commits

- [`9a7ca9c`](https://github.com/dreamfactorysoftware/df-core/commit/9a7ca9cb2f814cd5c47cc46eb4839eefb9d4b632) Merge pull request [#58](https://github-redirect.dependabot.com/dreamfactorysoftware/df-core/issues/58) from dreamfactorysoftware/df-scheduler - [`bf885ff`](https://github.com/dreamfactorysoftware/df-core/commit/bf885ffd271f56b84fbcfd54c91f854a81fc0fa3) Add throw exception to df:request command - See full diff in [compare view](https://github.com/dreamfactorysoftware/df-core/compare/0.16.1...0.16.2)

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[dependabot-preview[bot]]

Superseded by #17.