CurlDownloadStrategy: Ignore invalid last-modified header values

[issyl0]

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• Fixes Argument out of range, issue in resolve_url_basename_time_file_size #17556.
• Some download locations return a non-standard formatting of date string for the Last-Modified header. This causes Time.parse to blow up. The user sees error: argument out of range.
• In this commit we handle the error and return nil, which filter_map (equivalent to .map.compact) gets rid of and then time.last is as normal.

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TODO: Figure out how to write some tests for this.

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Before:

❯ brew install --cask ./olex2.rb                                                                                                        
Error: argument out of range
Warning: Removed Sorbet lines from backtrace!
Rerun with `--verbose` to see the original backtrace
/opt/homebrew/Library/Homebrew/vendor/portable-ruby/3.3.3/lib/ruby/3.3.0/time.rb:271:in `local'
/opt/homebrew/Library/Homebrew/vendor/portable-ruby/3.3.3/lib/ruby/3.3.0/time.rb:271:in `make_time'
/opt/homebrew/Library/Homebrew/vendor/portable-ruby/3.3.3/lib/ruby/3.3.0/time.rb:386:in `parse'
/opt/homebrew/Library/Homebrew/download_strategy.rb:523:in `block in resolve_url_basename_time_file_size'

After:

❯ brew install --cask ./olex2.rb
==> Downloading https://secure.olex2.org/olex2-distro/olex2-1.5.app.dmg
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[MikeMcQuaid]

Nice work so far, thanks @issyl0!

[MikeMcQuaid]

Thanks again @issyl0!