The `AbstractXContentFilteringTestCase#testDotsAndDoubleWildcardInExcludedFieldName` test (all subclasses) is failing. It is no longer failing due to invalid JSON (that was fixed by the upgrade to jackson 2.13.0), but it looks like it is failing to apply exclusions correctly.
libs/x-content/src/test/java/org/elasticsearch/xcontent/support/filtering/AbstractXContentFilteringTestCase.java
try (
            XContentParser jsonParser = xContent.createParser(
                XContentParserConfiguration.EMPTY,
                BytesReference.bytes(expected).streamInput()
            );
            XContentParser testParser = xContent.createParser(XContentParserConfiguration.EMPTY, BytesReference.bytes(actual).streamInput())
        ) {
            while (true) {
                XContentParser.Token token1 = jsonParser.nextToken();
                XContentParser.Token token2 = testParser.nextToken();
                if (token1 == null) {
                    assertThat(token2, nullValue());
                    return;
                }
                assertThat(token1, equalTo(token2));
                switch (token1) {
                    case FIELD_NAME -> assertThat(jsonParser.currentName(), equalTo(testParser.currentName()));
                    case VALUE_STRING -> assertThat(jsonParser.text(), equalTo(testParser.text()));
                    case VALUE_NUMBER -> {
                        assertThat(jsonParser.numberType(), equalTo(testParser.numberType()));
                        assertThat(jsonParser.numberValue(), equalTo(testParser.numberValue()));
                    }
                }
            }
        } catch (Exception e) {
            fail("Fail to verify the result of the XContentBuilder: " + e.getMessage());
        }
    }
}