Fix the workspace for the 999th time (paritytech#3169)

Changes:
- Add three missing crates to the workspace

<s>claravanstaden are these two snowbridge crates supposed to go into
the workspace?</s> ✅
@alvicsam can you please make the `Check workspace` required?

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

Cargo.toml

@@ -37,7 +37,9 @@ members = [
 	"bridges/primitives/xcm-bridge-hub",
 	"bridges/primitives/xcm-bridge-hub-router",
 	"bridges/snowbridge/parachain/pallets/ethereum-client",
+	"bridges/snowbridge/parachain/pallets/ethereum-client/fixtures",
 	"bridges/snowbridge/parachain/pallets/inbound-queue",
+	"bridges/snowbridge/parachain/pallets/inbound-queue/fixtures",
 	"bridges/snowbridge/parachain/pallets/outbound-queue",
 	"bridges/snowbridge/parachain/pallets/outbound-queue/merkle-tree",
 	"bridges/snowbridge/parachain/pallets/outbound-queue/runtime-api",
@@ -108,6 +110,7 @@ members = [
 	"cumulus/parachains/runtimes/bridge-hubs/common",
 	"cumulus/parachains/runtimes/bridge-hubs/test-utils",
 	"cumulus/parachains/runtimes/collectives/collectives-westend",
+	"cumulus/parachains/runtimes/constants",
 	"cumulus/parachains/runtimes/contracts/contracts-rococo",
 	"cumulus/parachains/runtimes/coretime/coretime-rococo",
 	"cumulus/parachains/runtimes/coretime/coretime-westend",