ci: add issue maintenance workflows

[rjaegers]

Pull Request

Description of changes

This PR adds two pieces of functionality related to PRs and issues:

• Stale issues and PRs will be labeled stale, and closed after a certain period of inactivity
• Quarterly an issue will be created that helps in evaluating tool versions for tools that are not updated automatically by Dependabot

Checklist

• I have followed the contribution guidelines for this repository
• I have added tests for new behavior, and have not broken any existing tests
• I have added or updated relevant documentation
• I have verified that all added components are accounted for in the SBOM

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	14		0	0.04s
✅ DOCKERFILE	hadolint	1		0	0.39s
✅ JSON	eslint-plugin-jsonc	8	0	0	3.04s
✅ JSON	prettier	8	0	0	0.43s
✅ JSON	v8r	8		0	4.5s
✅ MARKDOWN	markdownlint	8	0	0	1.08s
✅ MARKDOWN	markdown-link-check	8		0	6.23s
✅ MARKDOWN	markdown-table-formatter	8	0	0	0.28s
✅ REPOSITORY	checkov	yes		no	14.59s
✅ REPOSITORY	gitleaks	yes		no	1.53s
✅ REPOSITORY	git_diff	yes		no	0.0s
✅ REPOSITORY	grype	yes		no	13.45s
✅ REPOSITORY	secretlint	yes		no	1.44s
✅ REPOSITORY	trivy	yes		no	8.55s
✅ REPOSITORY	trivy-sbom	yes		no	1.63s
✅ REPOSITORY	trufflehog	yes		no	7.1s
✅ SPELL	lychee	41		0	2.05s
✅ YAML	prettier	16	0	0	1.11s
✅ YAML	v8r	16		0	8.97s
✅ YAML	yamllint	16		0	1.59s

See detailed report in MegaLinter reports

MegaLinter is graciously provided by

[github-actions]

Test Results

18 tests  ±0   18 ✅ ±0   36s ⏱️ -1s
 1 suites ±0    0 💤 ±0 
 1 files   ±0    0 ❌ ±0 

Results for commit 56be5fe. ± Comparison against base commit 78baa23.

♻️ This comment has been updated with latest results.

[github-actions]

Pull Request Report (#322)

Static measures

Description	Value
Number of added lines	102
Number of deleted lines	8
Number of changed files	7
Number of commits	5
Number of reviews	3
Number of comments (w/o review comments)	2
Number of reviews that contains a comment to resolve	2
Number of reviews that requested a change from the author	0
Number of reviews that approved the Pull Request	1
Get the total number of participants of a Pull Request	4

Time related measures

Description	Value
PR lead time (from creation to close of PR)	3.7 Days
Time that was spend on the branch before the PR was created	3.4 Min
Time that was spend on the branch before the PR was merged	3.7 Days
Time to merge after last review	3.1 Hours

Status check related measures

Description	Value
Total runtime for last status check run (Workflow for PR)	24.5 Min
Total time spend in last status check run on PR	47.4 Min