Add file extension to attached certificate filename

[christophbuehler]

Description

Type of change

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Refactor (a code change that neither fixes a bug nor adds a feature)
• [ ] Dependencies update
• [ ] This change requires a documentation update

Checklist:

• [ ] My code follows the style guidelines of this project
• [ ] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] My changes generate no new warnings
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] New and existing unit tests pass locally with my changes
• [ ] Any dependent changes have been merged and published in downstream modules

[nx-cloud[bot]]

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[github-actions[bot]]

	Warnings
:warning:	:exclamation: checkboxes (1)
:warning:	:exclamation: description (2)

(1) : There are 8 empty checkboxes, have you updated the checklist?

(2) : Have you added a description?

Generated by :no_entry_sign: dangerJS against f70f8726f693b773f17206dbecba8762eebfa7a3

[sonarcloud[bot]]

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 SonarCloud