Upgrade Hugo to 0.107.0

[bryanfriedman]

This PR upgrades hugo, Node and some related GitHub actions. Here is a list of specific changes:

• Upgrades hugo from a very old version (0.82.0) to the most recent version (0.107.0)
  • This required changing the logic of the render hooks as well as many of the relative links across the site as a result of this change which relates to this "bug": Bug in relURL with leading slash when baseURL includes a subdirectory gohugoio/hugo#9994). We had been relying on this to handle the prepending of /developer to all relative links, so we had to update our codebase to reflect the new behavior. This represents the bulk of the changes.
  • Updated Makefile to check for hugo version before running a build.
  • Fixed deprecated hugo code (tweet shortcode must include username and .Path should use .File.Path).
• Updates to GitHub Actions.
  • Updates all GH Actions to use checkout@v3 instead of v2.
  • Replaces custom spellchecker action with the new spellchecker in the GitHub Action Marketplace.
• Adds .nvmrc file to pin Netlify to using Node 16 during build.
  • The reason this is required even though the default should already be v16 for default image that Netlify is set to use - Ubuntu Focal 20.04 - when the site repository was originally linked to Netlify, it was using an older image that defaulted to v12, so it must be specified explicitly in the .nvmrc file. (See this article for more details.)
• Removed Node devDependencies that were not being used.

[bryanfriedman]

@danielramirez0 I think I've got this pretty well working. Main thing left is I will be updating the README to reflect the new version changes and other details. We can look at this together next week and we should socialize to TDC Slack channels for folks who build locally as they will need to do some brew upgrades, etc.

[danielramirez0]

@bryanfriedman Haven't written the rule for hugo-update yet, but also may not need if we just direct them to upgrade via brew manually. Also had an idea to write a rule for automating the prerequisite stuff for new (and maybe even existing) contributors.

[bryanfriedman]

This looks great! I think we should avoid trying to auto install or update hugo for now. It could get pretty hairy as we'd have to check if they're on a Mac, what version they have to see if we have to install or upgrade, etc. The logic is doable but complex so I think we just change the message to say use brew upgrade or brew install or wget etc. for now.