Disable CI linting sqlparser-rs (#671)

sqlparser-rs linting belongs at the source:
https://github.com/PeerDB-io/sqlparser-rs

That way new clippy rules flagging old code in sqlparser-rs don't cause
lint fails for this repo

Author: serprex

.github/workflows/rust-lint.yml

@@ -25,6 +25,9 @@ jobs:
         with:
           components: clippy
 
+      - name: disable clippy for sqlparser-rs
+        run: sed -i '1s/^/#![allow(clippy::all)]\n/' nexus/sqlparser-rs/src/lib.rs
+
       - name: clippy
         run: cargo clippy -- -D warnings
         working-directory: ./nexus