fix: strip off version prefix when parsing CocoaPods paths

For artifacts coming with a `v` prefix in the artifactory path,
e.g. `libwebp-v1.3.0.tar.gz`, the parsed version number should skip the
prefix i.e. it should be `1.3.0` and not `v1.3.0`.

core/src/main/java/io/snyk/plugins/artifactory/scanner/cocoapods/CocoapodsPackage.java

@@ -33,7 +33,7 @@ public static Optional<CocoapodsPackage> parse(
     }
 
     String[] nameVersion = artifactoryPackageName.replace(".tar.gz", "")
-        .replaceFirst("(?s)-(?!.*?-)", "!")
+        .replaceFirst("(?s)-[a-zA-Z]*(?!.*?-)", "!")
         .split("!");
 
     if (nameVersion.length != 2) {

core/src/test/java/io/snyk/plugins/artifactory/scanner/cocoapods/CocoapodsPackageTest.java

@@ -19,6 +19,17 @@ void parse() {
     assertThat(pckg.get().getVersion()).isEqualTo("1.9.1");
   }
 
+  @Test
+  void parse_whenVersionNumberHasVPrefix() {
+    Optional<CocoapodsPackage> pckg = CocoapodsPackage.parse(
+        "libwebp-v1.3.0.tar.gz"
+    );
+
+    assertThat(pckg).isNotEmpty();
+    assertThat(pckg.get().getName()).isEqualTo("libwebp");
+    assertThat(pckg.get().getVersion()).isEqualTo("1.3.0");
+  }
+
   @Test
   void parse_unexpectedPackageName() {
     assertThat(CocoapodsPackage.parse("3.5.1.tar.gz")).isEmpty();