Change the library version to 2.7.4
diff --git a/include/mbedtls/version.h b/include/mbedtls/version.h
index 7690ad6..8364c87 100644
--- a/include/mbedtls/version.h
+++ b/include/mbedtls/version.h
@@ -40,16 +40,16 @@
  */
 #define MBEDTLS_VERSION_MAJOR  2
 #define MBEDTLS_VERSION_MINOR  7
-#define MBEDTLS_VERSION_PATCH  3
+#define MBEDTLS_VERSION_PATCH  4
 
 /**
  * The single version number has the following structure:
  *    MMNNPP00
  *    Major version | Minor version | Patch version
  */
-#define MBEDTLS_VERSION_NUMBER         0x02070300
-#define MBEDTLS_VERSION_STRING         "2.7.3"
-#define MBEDTLS_VERSION_STRING_FULL    "mbed TLS 2.7.3"
+#define MBEDTLS_VERSION_NUMBER         0x02070400
+#define MBEDTLS_VERSION_STRING         "2.7.4"
+#define MBEDTLS_VERSION_STRING_FULL    "mbed TLS 2.7.4"
 
 #if defined(MBEDTLS_VERSION_C)