ruby: only warn if build tool cannot update

[jdx]

Fixes #1211

[codecov]

Codecov Report

Attention: 9 lines in your changes are missing coverage. Please review.

Comparison is base (7dc6c92) 82.58% compared to head (c4807e2) 82.54%.

Files	Patch %	Lines
src/plugins/core/ruby.rs	0.00%	9 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1212      +/-   ##
==========================================
- Coverage   82.58%   82.54%   -0.04%     
==========================================
  Files         141      141              
  Lines       13122    13128       +6     
==========================================
  Hits        10837    10837              
- Misses       2285     2291       +6     

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[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	5		0	0.13s
✅ BASH	bash-exec	20		0	0.06s
✅ BASH	shellcheck	20		0	0.47s
✅ BASH	shfmt	20	0	0	0.03s
✅ DOCKERFILE	hadolint	7		0	0.27s
✅ EDITORCONFIG	editorconfig-checker	453		0	0.42s
✅ JSON	eslint-plugin-jsonc	7	0	0	1.02s
✅ JSON	jsonlint	6		0	0.13s
✅ JSON	prettier	7	0	0	0.64s
✅ JSON	v8r	7		0	4.22s
✅ MARKDOWN	markdownlint	13	0	0	2.77s
✅ MARKDOWN	markdown-link-check	13		0	12.81s
✅ MARKDOWN	markdown-table-formatter	13	0	0	0.41s
✅ PYTHON	bandit	1		0	0.68s
✅ PYTHON	black	1	0	0	0.55s
✅ PYTHON	flake8	1		0	0.34s
✅ PYTHON	isort	1	0	0	0.32s
✅ PYTHON	mypy	1		0	2.01s
✅ PYTHON	pylint	1		0	1.31s
✅ PYTHON	pyright	1		0	5.36s
✅ PYTHON	ruff	1	0	0	0.05s
✅ REPOSITORY	dustilock	yes		no	0.01s
✅ REPOSITORY	gitleaks	yes		no	2.12s
✅ REPOSITORY	git_diff	yes		no	0.02s
✅ REPOSITORY	secretlint	yes		no	2.21s
✅ REPOSITORY	syft	yes		no	0.48s
✅ REPOSITORY	trivy-sbom	yes		no	0.99s
✅ REPOSITORY	trufflehog	yes		no	4.46s
✅ RUBY	rubocop	2	0	0	4.88s
✅ RUST	clippy	yes		no	108.65s
✅ XML	xmllint	5	0	0	0.04s
✅ YAML	prettier	13	0	0	1.16s
✅ YAML	v8r	13		0	12.8s
✅ YAML	yamllint	13		0	0.37s

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