fix: increase MaxConsumers to allow accounts to hold more than 15 different bonded coins #1075

Job	Run time
Get HEAD commit message	5s
Check formatting	1m 23s
Check cargo-deny rules	1m 37s
Run Chopsticks tests	1h 52m 46s
Run Clippy checks (--all-targets --all-features)	15m 58s
Run Clippy checks (--all-targets)	15m 50s
Run Clippy checks (--target wasm32-unknown-unknown --no-default-features --workspace --exclude ki...	7m 37s
Run Cargo tests	1h 6m 26s
Run Cargo tests (--all-features)	1h 3m 56s
Check Rustdoc	15m 27s
Run try-runtime (peregrine)	17m 20s
Test runtime benchmarks	0s
Check Rustdoc (--all-features)	15m 31s
Run try-runtime (spiritnet)	24m 13s
Trigger GitLab CI	0s
	5h 58m 9s

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