Update dependencies, fix cv linkedin, close #210

[dummied]

So, I clicked my linkedin link on the new board page and there was a dude with my name at that LinkedIn url who was not me. So, I replaced it with my own LinkedIn url.

While I was at it, I did some general care and upkeep stuff:

• Removed the call for Hackies nominations
• Upgraded various dependencies which needed security remediation
• Upgraded ruby while I was at it to avoid some dependencies that weren't playing well with older versions of ruby on macs.
• Got the app running locally and tested things as best I could/felt like at the time (not the admin areas)

Of note, running locally on my mac required me to set WEB_CONCURRENCY to zero (export WEB_CONCURRENCY=0; rails s) as ruby, macos and puma aren't playing nicely (at least for my versions of all of those bits and pieces). This should be mac-specific and not a problem in production.

[azurewraith]

fix the spelling of my last name while we're in there from the previous MR? 😁

[dummied]

fix the spelling of my last name while we're in there from the previous MR? 😁

I think @zcardwell took care of that here: #211 ... unless there's more to fix? Happy to take care of more stuff!