feat: Allow /weather/test1 endpoint for cache testing

Temporarily permit /weather/test1 endpoint to test Redis caching
without authentication in production environment.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: JIWONKIMS

src/main/kotlin/com/back/koreaTravelGuide/common/security/SecurityConfig.kt

@@ -61,6 +61,7 @@ class SecurityConfig(
                 authorize("/swagger-ui/**", "/v3/api-docs/**", permitAll)
                 authorize("/api/auth/**", permitAll)
                 authorize("/actuator/health", permitAll)
+                authorize("/weather/test1", permitAll)
                 authorize("/favicon.ico", permitAll)
                 if (isDev) {
                     authorize(anyRequest, permitAll)