Add CVE-2024-52813 for matrix-sdk-crypto (#2204)

Author: dkasak

crates/matrix-sdk-crypto/RUSTSEC-0000-0000.md

@@ -0,0 +1,24 @@
+```toml
+[advisory]
+id = "RUSTSEC-0000-0000"
+package = "matrix-sdk-crypto"
+date = "2024-01-07"
+url = "https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-r5vf-wf4h-82gg"
+categories = ["crypto-failure"]
+aliases = ["CVE-2024-52813", "GHSA-r5vf-wf4h-82gg"]
+informational = "notice"
+
+[versions]
+patched = [">= 0.8.0"]
+```
+
+#  Missing facility to signal rotation of a verified cryptographic identity
+
+Versions of the matrix-sdk-crypto Rust crate before 0.8.0 lack a dedicated
+mechanism to notify that a user's cryptographic identity has changed from a
+verified to an unverified one, which could cause client applications relying on
+the SDK to overlook such changes.
+
+matrix-sdk-crypto 0.8.0 adds a new `VerificationLevel::VerificationViolation`
+enum variant which indicates that a previously verified identity has been
+changed.