Zed update through "zio/tableio: preserve field name case in output" …

…by nwt

This is an auto-generated commit with a Zed dependency update. The Zed PR
brimdata/super#2964, authored by @nwt,
has been merged.

zio/tableio: preserve field name case in output

The table writer uppercases field names, which can surprise users.
Print field names verbatim instead.

Closes brimdata/super#2961.

package.json

@@ -156,7 +156,7 @@
     "tee-1": "^0.2.0",
     "tree-model": "^1.0.7",
     "valid-url": "^1.0.9",
-    "zed": "git+https://github.com/brimdata/zed.git#7359b7de0f2989e809ba82b043dbb0586ef2dcb9"
+    "zed": "git+https://github.com/brimdata/zed.git#5074a824b132d5788d529c82a54b0008f5ff8160"
   },
   "optionalDependencies": {
     "electron-installer-debian": "^3.0.0",