Fixed various awaits and implicitly declared variables

[GKosheev]

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name: "#160 Fixed various awaits and implicitly declared variables" about: "I'm ready to check in some code to fix an issue!" title: "[08/01/2022]: [Awaits and implicitly declared variables fixes]" assignee: colinalford

Closes #<Insert Issue # Here>

Please check if the PR fulfills these requirements

• [x] The title contains the issue number if fulfills and a concise description of the changes
• [x] These changes are related to an open issue

What changes are you introducing?

• Deleted redundant await keywords from multiple files in migrations folder.
• Added missing await keywords in files:
  • register-subscription.js
  • server.js
• Changed implicitly variables declaration in multiple files:
  • notify.js
  • purge-and-update-subscriptions.js
  • twilio-send-status-webhook.js

[ejaxon]

Hi @GKosheev - thanks again for these. Sorry it took so long to get them merged in.