chore(main): release 1.21.0

[apigee-devrel-helper]

🤖 I have created a release beep boop

1.21.0 (2024-12-20)

Features

• add curl to Docker image (e1c307e)
• add docker to image (a4c4f8d)
• allow for selective pipeline (3b93916)
• base pipeline builder off alpine (141cbc3)

Bug Fixes

• add --no-gpu to fix puppeteer regression in alpine (6c3ada5)
• add dbus to chromium (e30621b)
• broken link linter fix (eef26f4)
• clean up (9a3a12b)
• deprecate GCR repo (6dbcc00)
• proper error handling (b2d2568)
• proper error handling (6446826)

---

This PR was generated with Release Please. See documentation.

[github-actions]

Mega-Linter status: ⚠️ WARNING

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	4		0	0.15s
⚠️ BASH	bash-exec	105		1	12.76s
✅ BASH	shellcheck	105		0	16.47s
⚠️ BASH	shfmt	105		93	12.81s
⚠️ COPYPASTE	jscpd	yes		63	5.91s
✅ CREDENTIALS	secretlint	yes		no	4.29s
✅ DOCKERFILE	dockerfilelint	9		0	3.31s
✅ DOCKERFILE	hadolint	9		0	1.73s
✅ GIT	git_diff	yes		no	0.12s
✅ GO	golangci-lint	2		0	8.19s
✅ GO	revive	2		0	0.29s
✅ JAVA	checkstyle	6		0	13.06s
✅ JAVASCRIPT	eslint	94		0	2.06s
✅ JSON	eslint-plugin-jsonc	65		0	8.19s
✅ JSON	jsonlint	65		0	31.59s
⚠️ JSON	prettier	65		1	5.91s
✅ JSON	v8r	65		0	281.37s
⚠️ MARKDOWN	markdownlint	51		173	1.22s
⚠️ MARKDOWN	markdown-link-check	51		1	116.25s
⚠️ MARKDOWN	markdown-table-formatter	51		1	0.4s
✅ OPENAPI	spectral	12		0	35.34s
✅ PROTOBUF	protolint	1		0	0.13s
✅ PYTHON	bandit	7		0	1.28s
⚠️ PYTHON	black	7		1	1.95s
✅ PYTHON	flake8	7		0	1.11s
⚠️ PYTHON	isort	7		7	0.62s
⚠️ PYTHON	mypy	7		1	0.42s
✅ PYTHON	pylint	7		0	7.88s
⚠️ SPELL	cspell	830		1469	41.21s
⚠️ SPELL	misspell	830		1	0.45s
✅ XML	xmllint	420		0	0.2s
⚠️ YAML	prettier	35		1	3.0s
✅ YAML	v8r	35		0	101.28s
✅ YAML	yamllint	35		0	1.12s

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