chore: Fix foundry config to use profiles key (#3088)

Address this warning: Unknown section [default] found in foundry.toml. This notation for profiles has been deprecated and may result in the profile not being registered in future versions. Please use [profile.default] instead or run .

packages/contracts-bedrock/foundry.toml

-[default]
+[profile.default]
 src = 'contracts'
 out = 'forge-artifacts'
 optimizer = true
@@ -19,5 +19,5 @@ build_info = true
 ffi = true
 fuzz_runs = 16
 
-[ci]
+[profile.ci]
 fuzz_runs = 512

packages/contracts-periphery/foundry.toml

-[default]
+[profile.default]
 # The source directory
 src = 'contracts/universal'
 # The test directory

packages/integration-tests-bedrock/foundry.toml

-[default]
+[profile.default]
 src = 'contracts'
 out = 'forge-artifacts'
 optimizer = true