Fix towards flow mapping and colons.

saphyr/src/scanner.rs

@@ -1697,6 +1697,7 @@ impl<T: Iterator<Item = char>> Scanner<T> {
 
         // From spec: To ensure JSON compatibility, if a key inside a flow mapping is JSON-like,
         // YAML allows the following value to be specified adjacent to the “:”.
+        self.skip_to_next_token()?;
         self.adjacent_value_allowed_at = self.mark.index;
 
         self.tokens.push_back(tok);

saphyr/tests/yaml-test-suite.rs

@@ -297,9 +297,6 @@ fn expected_events(expected_tree: &str) -> Vec<String> {
 
 #[rustfmt::skip]
 static EXPECTED_FAILURES: &[&str] = &[
-    // Flow mapping colon on next line / multiline key in flow mapping
-    "5MUD",
-    "K3WX",
     // Bare document after end marker
     "7Z25",
     "M7A3",