Update grunt-contrib-connect requirement from ~0.3.0 to ~2.1.0

[dependabot-preview]

Updates the requirements on grunt-contrib-connect to permit the latest version.

Changelog

Sourced from grunt-contrib-connect's changelog.

v2.1.0:
date: 2019-09-03
changes:
- Update package lock.
- Allow all configuration options of livereload to be passed through.
v2.0.0:
date: 2018-09-09
changes:
- Drop Node.js < 6 support.
- Update all dependencies and switch to node-http2.
- Add secureProtocol in httpsOptions.
- Fix open.appName.
- Allow passing serve-index options.
v1.0.2:
date: 2016-04-27
changes:
- Fixed http2 dependencies and stopped using the fork.
v1.0.1:
date: 2016-03-22
changes:
- Fixed dependencies behind corporate proxy server.
v1.0.0:
date: 2016-03-04
changes:
- Use predefined logger format with colored http status.
- Update deps and docs.
- HTTP2 support.
- Other fixes.
v0.11.2:
date: 2015-08-03
changes:
- Documentation fixes.
v0.11.1:
date: 2015-08-01
changes:
- Fixes debug logging.
v0.11.0:
date: 2015-07-30
changes:
- Update to connect 3.
v0.10.1:
date: 2015-04-03
changes:
- Fixes npm corruption issue.
v0.10.0:
date: 2015-04-03
changes:
- Node.js 0.12 fixes.
- Doc updates.
- Fixes port finding.

... (truncated)

Commits

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[dependabot-preview]

Superseded by #43.