Bump pytest from 6.2.5 to 7.4.2 #124

Job	Run time
Run script/ci-custom	1m 5s
Run script/lint-python	3m 7s
Test tests/test1.yaml	1m 1s
Test tests/test2.yaml	57s
Test tests/test3.yaml	49s
Test tests/test4.yaml	56s
Test tests/test5.yaml	50s
Run pytest	1m 26s
Run script/clang-format	1m 17s
Run script/clang-tidy for ESP8266	1m 37s
Run script/clang-tidy for ESP32 1/4	57s
Run script/clang-tidy for ESP32 2/4	1m 0s
Run script/clang-tidy for ESP32 3/4	58s
Run script/clang-tidy for ESP32 4/4	1m 13s
Run script/clang-tidy for ESP32 esp-idf	1m 3s
	18m 16s

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