Re-enable minimal versions checks #1206

Job	Run time
no_std (stable, thumbv7em-none-eabi)	1m 50s
no_std (1.85.0, thumbv7em-none-eabi)	1m 51s
no_std (stable, wasm32-unknown-unknown)	1m 36s
build (x86_64-apple-darwin, macos-latest, stable)	37s
build (x86_64-pc-windows-msvc, windows-latest, stable)	2m 1s
test (1.85.0)	3m 47s
build (i686-unknown-linux-gnu, ubuntu-latest, stable, sudo apt update && sudo apt install gcc-mul...	58s
test (stable)	3m 43s
no_std (1.85.0, wasm32-unknown-unknown)	1m 35s
minimal-versions / minimal-versions	50s
	18m 48s

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