Add git pull when switch

Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>

pico_keys_sdk_import.cmake

@@ -144,6 +144,12 @@ if(NOT ESP_PLATFORM)
         WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
         OUTPUT_QUIET ERROR_QUIET
     )
+
+    execute_process(
+        COMMAND git -C ${MBEDTLS_PATH} pull
+        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+        OUTPUT_QUIET ERROR_QUIET
+    )
 endif(NOT ESP_PLATFORM)
 
 set(MBEDTLS_SOURCES