Update solana-version

Author: joncinque

ci/solana-version.sh

@@ -14,9 +14,7 @@
 if [[ -n $SOLANA_VERSION ]]; then
   solana_version="$SOLANA_VERSION"
 else
-  # This file is now out of sync with the versions in Cargo.toml.
-  # Update to v2.1 once the tarball is ready
-  solana_version=v2.0.14
+  solana_version=v2.1.0
 fi
 
 export solana_version="$solana_version"