Merge pull request #306 from 0xsequence/Fix/forge-submodule

updated .gitsubmodules for new forge url

Author: andygruening

.gitmodules

@@ -3,4 +3,4 @@
 	url = https://github.com/0xsequence/contracts-library.git
 [submodule "testchain/lib/forge-std"]
 	path = testchain/lib/forge-std
-	url = https://github.com/foundry-rs/forge-stdy
+	url = https://github.com/foundry-rs/forge-std