[apkverify] Skip DSA SHA256 during apk verification

Test: libapkverify.integration_test
Bug: 197052981
Change-Id: Ia42864ab609b1dbe59e260bd330cbdc4079982d6
diff --git a/libs/apkverify/src/v3.rs b/libs/apkverify/src/v3.rs
index 05694ff..80ef687 100644
--- a/libs/apkverify/src/v3.rs
+++ b/libs/apkverify/src/v3.rs
@@ -141,7 +141,7 @@
         Ok(self
             .signatures
             .iter()
-            .filter(|sig| sig.signature_algorithm_id.is_some())
+            .filter(|sig| sig.signature_algorithm_id.map_or(false, |algo| algo.is_supported()))
             .max_by_key(|sig| sig.signature_algorithm_id.unwrap().content_digest_algorithm())
             .context("No supported signatures found")?)
     }