chore: update copyright year to 2022

[kaymckay]

This is a general housekeeping task.
Used VS code's search and replace:
• Search: Copyright (c) 2021
• Replace: Copyright (c) 2022

At the top of every file, the new copyright statement now looks like:
// Copyright (c) 2022 Target Brands, Inc. All rights reserved.

[codecov]

Codecov Report

Merging #48 (f0805bf) into master (4d880d2) will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master      #48   +/-   ##
=======================================
  Coverage   62.89%   62.89%           
=======================================
  Files           7        7           
  Lines         671      671           
=======================================
  Hits          422      422           
  Misses        241      241           
  Partials        8        8           

Impacted Files	Coverage Δ
cmd/vela-docker/build.go	95.90% <ø> (ø)
cmd/vela-docker/command.go	68.75% <ø> (ø)
cmd/vela-docker/daemon.go	75.47% <ø> (ø)
cmd/vela-docker/main.go	0.00% <0.00%> (ø)
cmd/vela-docker/plugin.go	17.74% <ø> (ø)
cmd/vela-docker/push.go	86.20% <ø> (ø)
cmd/vela-docker/registry.go	100.00% <ø> (ø)

[KellyMerrick]

lgtm