Small improvements

scripts/bump-version.sh

@@ -25,13 +25,16 @@ else
 fi
 
 echo "Bumping sync-server versions"
-cd sync-server
-cargo set-version --bump $1
+(
+    cd sync-server
+    cargo set-version --bump $1
+)
 
 echo "Bumping frontend versions"
-cd ../frontend
-npm version $1 --workspaces
-cd ..
+(
+    cd frontend
+    npm version $1 --workspaces
+)
 
 cp frontend/obsidian-plugin/manifest.json manifest.json  # for BRAT, otherwise it wouldn't update