[clang-tidy] Concatenate nested namespaces (6/7: components t-z) (#16305)

esphome/components/tm1638/switch/tm1638_switch_led.cpp

@@ -1,8 +1,7 @@
 #include "tm1638_switch_led.h"
 #include "esphome/core/log.h"
 
-namespace esphome {
-namespace tm1638 {
+namespace esphome::tm1638 {
 
 static const char *const TAG = "tm1638.led";
 
@@ -16,5 +15,4 @@ void TM1638SwitchLed::dump_config() {
   ESP_LOGCONFIG(TAG, "  LED: %d", led_);
 }
 
-}  // namespace tm1638
-}  // namespace esphome
+}  // namespace esphome::tm1638