Use new create package action with attestation #5830

Job	Run time
Check towncrier / Towncrier Checks	35s
Pre-commit checks / Pre-commit Checks	35s
Package Toga (core) / Create Python Package	18s
Package Toga (cocoa) / Create Python Package	17s
Package Toga (android) / Create Python Package	17s
Package Toga (dummy) / Create Python Package	23s
Package Toga (gtk) / Create Python Package	24s
Package Toga (iOS) / Create Python Package	22s
Package Toga (textual) / Create Python Package	13s
Package Toga (toga) / Create Python Package	15s
Package Toga (demo) / Create Python Package	23s
Package Toga (web) / Create Python Package	24s
Package Toga (winforms) / Create Python Package	14s
Test core (macos-12, 3.8)	24s
Test core (macos-12, 3.12)	27s
Test core (macos-12, 3.13-dev)	51s
Test core (macos-14, 3.12)	19s
Test core (macos-14, 3.13-dev)	34s
Test core (ubuntu-latest, 3.8)	7s
Test core (ubuntu-latest, 3.12)	16s
Test core (ubuntu-latest, 3.13-dev)	26s
Test core (windows-latest, 3.8)	31s
Test core (windows-latest, 3.12)	37s
Test core (ubuntu-latest, 3.9, false)	15s
Test core (ubuntu-latest, 3.10, false)	17s
Test core (ubuntu-latest, 3.11, false)	14s
Testbed	1s
Coverage	1s
	10m 0s

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