Set PoV size limit to 10 Mb #7127

Job	Run time
preflight / preflight	44s
preflight / ci-versions	1m 1s
cargo-check-benches (master)	21m 3s
test-frame-ui	30m 14s
cargo-check-benches (current)	23m 42s
cargo-check-all-crate-macos	11m 16s
cargo-check-each-crate (1)	23m 32s
cargo-check-each-crate (2)	23m 45s
cargo-check-each-crate (3)	8m 29s
test-node-metrics	12m 9s
test-full-crypto-feature	2m 50s
cargo-check-each-crate (4)	23m 22s
cargo-check-each-crate (5)	28m 53s
cargo-check-each-crate (6)	14m 58s
cargo-check-each-crate (7)	28m 38s
test-frame-examples-compile-to-wasm	3m 4s
check-tracing	2m 29s
test-deterministic-wasm	7m 1s
check-metadata-hash	7m 3s
node-bench-regression-guard	15s
All test misc tests passed	1s
	4h 34m 29s

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