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

esphome/components/tm1638/tm1638.cpp

@@ -4,8 +4,7 @@
 #include "esphome/core/helpers.h"
 #include "esphome/core/log.h"
 
-namespace esphome {
-namespace tm1638 {
+namespace esphome::tm1638 {
 
 static const char *const TAG = "display.tm1638";
 static const uint8_t TM1638_REGISTER_FIXEDADDRESS = 0x44;
@@ -282,5 +281,4 @@ void TM1638Component::shift_out_(uint8_t val) {
   }
 }
 
-}  // namespace tm1638
-}  // namespace esphome
+}  // namespace esphome::tm1638