build: bump "prb-test"

style: fix formatting in "Foo.sol"

lib/prb-test

@@ -1 +1 @@
-Subproject commit 99c2cd52a755150fafa198f1479f0d2325456e07
+Subproject commit 28aaf19d4fea85b2000431ced340002e808abb64

src/Foo.sol

@@ -2,11 +2,7 @@
 pragma solidity >=0.8.19;
 
 contract Foo {
-    function id(uint256 value)
+    function id(uint256 value) external pure returns (uint256) {
-        external
-        pure
-        returns (uint256)
-    {
         return value;
     }
 }