bring all things current

[beardedeagle]

• Bumped alpine to 3.12.0
• Bumped otp to 23.0.2
• Bumped elixir to 1.10.4
• Bumped rebar to 3.13.2
• Bumped hex to 0.20.5
• Bumped nodejs to 14.5.0
• Bumped npm to 6.14.6