Change test-32bit arm32v7 runner to ubuntu-22.04-arm #5596

Job	Run time
cargo-deny	29s
cargo-deny-advisories	26s
check-blocking	2s
check-packetline (ubuntu-latest)	5s
lint	4m 1s
pure-rust-build	2m 0s
test	10m 28s
test-32bit (i386)	5m 50s
test-32bit (arm32v7)	4m 20s
test-fast (windows-latest)	15m 27s
test-fast (macos-latest)	3m 39s
test-fixtures-windows	14m 32s
test-fast (ubuntu-latest)	3m 43s
test-journey	3m 59s
test-fast (ubuntu-22.04-arm)	4m 7s
WebAssembly (wasm32-unknown-unknown)	1m 8s
WebAssembly (wasm32-wasip1)	41s
Tests pass	1s
	1h 14m 58s

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