Fix Dependabot security alert for tar (#62)

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: dggrunzweig

package.json

@@ -30,7 +30,7 @@
     "vite": "6.4.1",
     "@babel/runtime": "7.27.1",
     "@babel/helpers": "7.27.1",
-    "tar": "7.5.4",
+    "tar": "7.5.7",
     "qs": "6.14.1",
     "brace-expansion@^1.1.7": "1.1.12",
     "brace-expansion@^2.0.1": "2.0.2"