Update IDF libraries

tools/sdk/include/freertos/freertos/portable.h

@@ -194,6 +194,12 @@ void vPortYieldOtherCore( BaseType_t coreid) PRIVILEGED_FUNCTION;
  */
 void vPortSetStackWatchpoint( void* pxStackStart );
 
+/*
+ * Returns true if the current core is in ISR context; low prio ISR, med prio ISR or timer tick ISR. High prio ISRs
+ * aren't detected here, but they normally cannot call C code, so that should not be an issue anyway.
+ */
+BaseType_t xPortInIsrContext();
+
 /*
  * The structures and methods of manipulating the MPU are contained within the
  * port layer.