Merge branch '7.3.x' into merge-7.3.0-rc.1-to-main

Author: dhalbert

ports/atmel-samd/boards/arduino_mkr1300/mpconfigboard.mk

@@ -9,3 +9,5 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+
+CIRCUITPY_RAINBOWIO = 0

py/circuitpy_mpconfig.h

@@ -213,7 +213,7 @@ typedef long mp_off_t;
 #define MICROPY_CPYTHON_COMPAT                (CIRCUITPY_FULL_BUILD)
 #endif
 #define MICROPY_PY_BUILTINS_POW3              (CIRCUITPY_BUILTINS_POW3)
-#define MICROPY_PY_FSTRINGS                   (MICROPY_CPYTHON_COMPAT)
+#define MICROPY_PY_FSTRINGS                   (1)
 #define MICROPY_MODULE_WEAK_LINKS             (0)
 #define MICROPY_PY_ALL_SPECIAL_METHODS        (CIRCUITPY_FULL_BUILD)
 #ifndef MICROPY_PY_BUILTINS_COMPLEX