This is particularly useful for third-party Python formulae that have a ton of resources, not all of which may adhere to homebrew/core's strict policies. See #19240 for context.
I've also added logic that ignores `--ignore-errors` on `homebrew/core`, although I personally think this new behavior is also useful for mainline formula creation.
Before: error out on a single non-conforming resource, zero resource blocks added to formula, scary stacktrace.
After: all conforming resources added, all non-conforming resources identified in comments, error message at end, `brew` exits non-zero without scary stacktrace:-
```
% brew update-python-resources --ignore-errors gromgit/test/auto-coder || echo OOPS
==> Retrieving PyPI dependencies for "auto-coder==0.1.243"...
==> Retrieving PyPI dependencies for excluded ""...
==> Getting PyPI info for "aiohappyeyeballs==2.4.4"
[200+ resource lines elided]
==> Getting PyPI info for "zhipuai==2.1.5.20250106"
==> Updating resource blocks
Error: Unable to resolve some dependencies. Please check /opt/homebrew/Library/Taps/gromgit/homebrew-test/Formula/auto-coder.rb for RESOURCE-ERROR comments.
OOPS
% brew cat gromgit/test/auto-coder | ggrep -C10 RESOURCE-ERROR
license "Apache-2.0"
depends_on "python@3.11"
# Additional dependency
# resource "" do
# url ""
# sha256 ""
# end
# RESOURCE-ERROR: Unable to resolve "azure-cognitiveservices-speech==1.42.0" (no suitable source distribution on PyPI)
# RESOURCE-ERROR: Unable to resolve "ray==2.42.0" (no suitable source distribution on PyPI)
resource "aiohappyeyeballs" do
url "e4373e888f/aiohappyeyeballs-2.4.4.tar.gz"
sha256 "5fdd7d87889c63183afc18ce9271f9b0a7d32c2303e394468dd45d514a757745"
end
resource "aiohttp" do
url "952d49c730/aiohttp-3.11.12.tar.gz"
sha256 "7603ca26d75b1b86160ce1bbe2787a0b706e592af5b2504e12caa88a217767b0"
end
```
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