fix/OPS-399: 리프레시 토큰 이슈 수정. (#160)

Author: Kimgooner

src/main/java/org/tuna/zoopzoop/backend/global/security/jwt/JwtUtil.java

@@ -110,6 +110,7 @@ public String generateRefreshToken(Member member) {
                 .setSubject(subject)
                 .claim("userId", member.getId())
                 .claim("name", member.getName())
+                .claim("tokenType", "refresh")
                 .setIssuedAt(now)
                 .setExpiration(expiryDate)
                 .signWith(getSigningKey())