fix(fuzz): skip json unsupported type errors (#928)

Add skip pattern for json.UnsupportedTypeError in fuzz
test. The toJSON() builtin returns this error when given
non-serializable types like functions (e.g. toJSON(score)).

The existing skip list only covered json: unsupported value
(for NaN/Inf) but not json: unsupported type (for func,
chan, complex types).

Signed-off-by: Ville Vesilehto <ville@vesilehto.fi>
Co-authored-by: Anton Medvedev <anton@medv.io>

Author: thevilledev

test/fuzz/fuzz_test.go

@@ -36,6 +36,7 @@ func FuzzExpr(f *testing.F) {
 		regexp.MustCompile(`unknown time zone`),
 		regexp.MustCompile(`invalid location name`),
 		regexp.MustCompile(`json: unsupported value`),
+		regexp.MustCompile(`json: unsupported type`),
 		regexp.MustCompile(`json: cannot unmarshal .* into Go value of type .*`),
 		regexp.MustCompile(`unexpected end of JSON input`),
 		regexp.MustCompile(`memory budget exceeded`),