Change the type of `psDeposits` to `CompactForm Coin` #18966

Job	Run time
shellcheck	5s
fourmolu	2m 52s
gen-hie	2m 53s
cabal-format	1s
build (9.12.2, ubuntu-latest)	1m 59s
build (9.10.2, ubuntu-latest)	1s
build (9.8.4, ubuntu-latest)	2m 53s
build (9.6.7, ubuntu-latest)	1m 41s
Check branch history	11s
Check if formal-ledger-specifications SRP is valid	2s
${{ matrix.package }}-${{ matrix.ghc }}-${{ matrix.os }}	1s
Tests completed	2s
codegen	1s
Send a slack notification on \#ledger-internal if the nightly build failed	1s
	12m 43s

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