Add more `application` MIME types detectable by the `mimetypes` module

[clin1234]

Add the following MIME types with associated file extensions detectable by the mimetypes module (and tests for such module):

• application/efi
• application/pem-certificate-chain
• application/pgp-keys
• application/sql
• application/zstd
• application/ocsp-request
• application/ocsp-response
• application/mathematica
• application/mathml+xml
• application/mbox
• application/pem-certificate-chain

Linked PRs

• gh-140392: Add application MIME types in Lib/mimetypes.py #140393

[sergey-miryanov]

Please add an extended description of what you want to add.