Bump idna from 3.6 to 3.7 in /doc #1220

Job	Run time
Test Tidy Enforcement on macOS	6m 50s
Tests (clang++, test-native-regular)	27m 10s
Build Docker Image	7m 50s
Tests (clang++, test-native-fulldebug)	28m 1s
Measure Test Coverage	33m 30s
Web Tests	6m 21s
Tests (clang++, test-native-opt)	49m 39s
Tests (clang++, test-examples)	9m 55s
Enforce Tidyness	1m 28s
Tests (clang++, test-demos)	2m 49s
Tests (g++, test-native-regular)	36m 15s
Tests (g++, test-native-fulldebug)	36m 24s
Tests (g++, test-native-opt)	51m 33s
Tests (g++, test-examples)	9m 39s
Tests (g++, test-demos)	2m 44s
Test Documentation Build	12m 18s
Deploy Documentation Coverage	0s
Deploy to DockerHub and ghcr.io	0s
	5h 22m 26s

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