Checking PR #942: asterisk: bump to v23.4.0 (Formalities Audit)

✅ Pull request originates from a dedicated feature branch (ast)

Commit 91e23a1 - pjproject: add config_site.h as file and not as patch:

✅ Author and committer identities are valid
✅ Commit is not a merge commit
✅ Commit subject layout and length are valid: "pjproject: add config_site.h as file and not as patch"
✅ Commit description lines adhere to width formatting rules
✅ Commit contains a consistent and valid 'Signed-off-by:' line
⚠️ Warning: No reference link (e.g., upstream release notes, changelog, or history URL) detected in description.
⚠️ Warning: Commit is unsigned or cryptographic signature verification failed (Reason: unsigned). Signing commits is a recommended best practice for verifying identity, but is not mandatory.

Commit 3c43392 - pjproject: update to 2.17:

✅ Author and committer identities are valid
✅ Commit is not a merge commit
✅ Commit subject layout and length are valid: "pjproject: update to 2.17"
✅ Commit description lines adhere to width formatting rules
✅ Commit contains a consistent and valid 'Signed-off-by:' line
⚠️ Warning: Commit is unsigned or cryptographic signature verification failed (Reason: unsigned). Signing commits is a recommended best practice for verifying identity, but is not mandatory.

Commit 7f7ce3d - asterisk: bump to v23.4.1:

✅ Author and committer identities are valid
✅ Commit is not a merge commit
✅ Commit subject layout and length are valid: "asterisk: bump to v23.4.1"
✅ Commit description lines adhere to width formatting rules
✅ Commit contains a consistent and valid 'Signed-off-by:' line
⚠️ Warning: Commit is unsigned or cryptographic signature verification failed (Reason: unsigned). Signing commits is a recommended best practice for verifying identity, but is not mandatory.