Bump express and docpad

[dependabot]

Removes express. It's no longer used after updating ancestor dependency docpad. These dependencies need to be updated together.

Removes express

Updates docpad from 6.79.4 to 6.83.2

Changelog

Sourced from docpad's changelog.

v6.83.2 2020 September 8

• If the source path is missing, the correct and useful error is now displayed
• The deprecated srcPath is now removed, use sourcePaths to write and getPath('source') and getPath('sources') to read
• Extra debugging for when getting a path fails
• Updated documentation and website links to their new locations

v6.83.1 2020 August 5

• Add a new loadPlugins event for use in the docpad-plugintester to make sure all test plugins are properly loaded before docpadReady and other events are fired

v6.83.0 2020 August 5

• Removed superflous option aliases
  • outPath => outpath
  • configPaths, configPath, c => config
  • environment, e => env
  • logLevel => log
  • render --out, render -o => render --output
• Removed offline option, it can be re-added later if anyone uses it
• Removed the last bits of docpad cloud helper functionality
  • Removed skeleton functionality, just clone the repo from github instead
    • docpad skeleton => docpad init (same functionality as selecting no sekleton)
  • Removed version check
• Updated dependencies, base files, and editions using boundation
  • This will bring a massive performance boost to DocPad, especially with Caterpillar v6 which allows DocPad to disable fetching line information (a very expensive process) for log messages we don't care about
• Minimum required node version changed from node: >=6 to node: >=10 to keep up with mandatory ecosystem changes

v6.82.5 2018 October 1

• Prevent plugin false could not be loaded errors, now it will output the path that failed to be found, as expected

v6.82.4 2018 September 8

• Report the correct error for missing action requests
• Ensure docpad-plugintester dependency is latest

v6.82.3 2018 September 8

• Swapped out promptly for inquirer, which brings back Node v6 support (regression since v6.82.1)
  • Close [issue #1093](docpad/docpad#1093)

v6.82.2 2018 September 8

• Add logging support to the pluginloader to make debugging plugin resolutions easier
• Fixed failures of plugin loading and creation not being reported correctly
• Ensure all dependencies are the latest right now, to help fix false negatives in plugin resolution
• Close [thread #248](https://discuss.bevry.me/t/plugins-broken-in-6-82-1/573?u=balupton)

v6.82.1 2018 September 7

... (truncated)

Commits

• 85b3297 v6.83.2 - bugfixes
• e36e387 Bump underscore from 1.10.2 to 1.11.0 (#1119)
• e44cac1 Bump watchr from 6.6.0 to 6.8.0 (#1118)
• a7fe51a Bump scandirectory from 6.11.0 to 6.13.0 (#1116)
• 81929c3 Bump safefs from 6.11.0 to 6.12.0 (#1113)
• 0e9c4e0 Bump rfc-log-levels from 3.12.0 to 3.13.0 (#1114)
• 080eed2 Bump cson from 7.18.0 to 7.19.0 (#1112)
• 5d8cc07 Bump valid-directory from 3.0.0 to 3.2.0 (#1111)
• a8f1f12 Bump kava from 5.10.0 to 5.11.0 (#1110)
• f14ffee Bump ignorefs from 3.11.0 to 3.12.0 (#1109)
• Additional commits viewable in compare view

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