refactor: use container image repo client from go-containerregistry

[krancour]

Fixes #1488

This is a giant step toward solving #1885 since go-containerregistry supports quite a variety of authn options, including the ability to emulate ACR, ECR, and GCR Docker credentials helpers. Those new authn methods are not included in this PR. Those will come in a follow-up.

Note that I prefer we merge #1984 before this since I know there will be merge conflicts between the two PRs and I volunteer as tribute. All set.

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[codecov]

Codecov Report

Attention: Patch coverage is 65.41353% with 46 lines in your changes are missing coverage. Please review.

Project coverage is 45.63%. Comparing base (828acc0) to head (926ca71).
Report is 1 commits behind head on main.

Files	Patch %	Lines
internal/image/repository_client.go	77.77%	21 Missing and 3 partials ⚠️
internal/image/digest_selector.go	0.00%	13 Missing ⚠️
internal/image/newest_build_selector.go	0.00%	5 Missing ⚠️
internal/image/lexical_selector.go	0.00%	2 Missing ⚠️
internal/image/semver_selector.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2018      +/-   ##
==========================================
- Coverage   45.81%   45.63%   -0.18%     
==========================================
  Files         235      234       -1     
  Lines       16192    16001     -191     
==========================================
- Hits         7418     7302     -116     
+ Misses       8413     8342      -71     
+ Partials      361      357       -4     

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[hiddeco]

PRs with a negative LOC are always great, if they also deal with deprecated dependencies it's even better.

Three birds, one stone IMHO. 💯