tests: adjust Test_parser error message to Bison 3.6+

Bison 3.6 refers YYEOF as "end of file" instead of "$end".

Signed-off-by: Daiki Ueno <ueno@gnu.org>
diff --git a/tests/Test_parser.c b/tests/Test_parser.c
index 178f111..ff01311 100644
--- a/tests/Test_parser.c
+++ b/tests/Test_parser.c
@@ -49,7 +49,7 @@
    "TEST_PARSER2 { } DEFINITIONS IMPLICIT TAGS ::= BEGIN int1 ::= INTEGER END",
    ASN1_SYNTAX_ERROR,
    _FILE_
-   ":6: Error: syntax error, unexpected IDENTIFIER, expecting $end near 'TEST_PARSER'"},
+   ":6: Error: syntax error, unexpected IDENTIFIER, expecting end of file near 'TEST_PARSER'"},
   {6, "TEST_PARSER { }", ASN1_SUCCESS, ""},
 
   /* Test ASN1_MAX_NAME_SIZE (128) */