Bump fonttools from 4.55.2 to 4.55.3 in /testbed #7431

Job	Run time
Pre-commit checks / Pre-commit Checks	8s
Check towncrier / Towncrier Checks	10s
Package Toga (android) / Create Python Package	9s
Package Toga (cocoa) / Create Python Package	7s
Package Toga (core) / Create Python Package	8s
Package Toga (demo) / Create Python Package	7s
Package Toga (dummy) / Create Python Package	9s
Package Toga (gtk) / Create Python Package	1s
Package Toga (textual) / Create Python Package	1s
Package Toga (iOS) / Create Python Package	1s
Package Toga (toga) / Create Python Package	1s
Package Toga (web) / Create Python Package	1s
Package Toga (winforms) / Create Python Package	1s
Test core	1s
MicroPython compatibility	1s
Coverage	1s
Testbed	1s
	1m 8s

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