implement an alternative way of getting release date

[pawelru]

pkgcache stopped reporting publish date used as a release date used in min_cohort strategy. As a result, NA is used which makes max release date not correct.
I have reported this (linked issue) and the maintainer agreed it's an issue that needs a fix. Until this happen, please see this temporary workaround of scrapping it from CRAN webpage.

@Melkiades FYI: that's the root cause of the formatters issue we have observed

[github-actions]

Code Coverage Summary

Filename                          Stmts    Miss  Cover    Missing
------------------------------  -------  ------  -------  ------------------------
R/check.R                            37      37  0.00%    26-170
R/deps_installation_proposal.R      139     139  0.00%    58-269
R/desc_utils.R                       70      42  40.00%   15-32, 108, 117-167, 185
R/get_ref.R                         218     217  0.46%    13-419, 435-467
R/solve.R                            81      81  0.00%    9-165
R/utils.R                            70      55  21.43%   3-22, 38-113
TOTAL                               615     571  7.15%

Diff against main

Filename                          Stmts    Miss  Cover
------------------------------  -------  ------  --------
R/deps_installation_proposal.R       +2      +2  +100.00%
R/get_ref.R                         +10     +10  -0.02%
TOTAL                               +12     +12  -0.14%

Results for commit: 07c97c0

Minimum allowed coverage is 80%

♻️ This comment has been updated with latest results

[github-actions]

Unit Tests Summary

 1 files   4 suites   1s ⏱️
41 tests 13 ✅ 28 💤 0 ❌
94 runs  65 ✅ 29 💤 0 ❌

Results for commit 07c97c0.

♻️ This comment has been updated with latest results.

[averissimo]

LGTM!

Good thing you applied my original suggestion and not the edit 🤦