Change submodule URL from git@ to https://

ryzhyk · ryzhyk · commit 824ed895cb43 · 2023-05-18T12:17:16.000-07:00
git@ URLs don't work in the CI environment.
diff --git a/.gitmodules b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "sql-to-dbsp-compiler"]
 	path = sql-to-dbsp-compiler
-	url = git@github.com:feldera/sql2dbsp.git
+	url = https://github.com/feldera/sql2dbsp.git
