ci: fix test.bats to not remove test-report.xml

[daantimmer]

Fixes #155

[github-actions]

Test Results

24 tests  +24   24 ✅ +24   2s ⏱️ +2s
 1 suites + 1    0 💤 ± 0 
 1 files   + 1    0 ❌ ± 0 

Results for commit e39303b. ± Comparison against base commit 8ec2bdd.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

🦙 MegaLinter status: ⚠️ WARNING

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	6		0	0.03s
✅ CPP	clang-format	81	1	0	0.54s
✅ DOCKERFILE	hadolint	1		0	0.12s
✅ JSON	jsonlint	8		0	0.15s
✅ JSON	prettier	8	6	0	0.46s
✅ MARKDOWN	markdownlint	4	1	0	0.68s
⚠️ MARKDOWN	markdown-link-check	4		2	21.48s
✅ MARKDOWN	markdown-table-formatter	4	1	0	0.19s
✅ REPOSITORY	checkov	yes		no	13.64s
✅ REPOSITORY	git_diff	yes		no	0.01s
✅ REPOSITORY	grype	yes		no	10.49s
✅ REPOSITORY	ls-lint	yes		no	0.06s
✅ REPOSITORY	secretlint	yes		no	1.02s
✅ REPOSITORY	trivy	yes		no	7.11s
✅ REPOSITORY	trivy-sbom	yes		no	0.08s
✅ REPOSITORY	trufflehog	yes		no	2.39s
⚠️ SPELL	lychee	49		1	1.61s
✅ YAML	prettier	10	0	0	0.58s
✅ YAML	v8r	10		0	3.77s
✅ YAML	yamllint	10		0	0.46s

See detailed report in MegaLinter reports