zq update through "Add support for timestamps with signed tz offsets"…

… by henridf

This is an auto-generated commit with a zq dependency update. The zq PR
brimdata/super#1389, authored by @henridf,
has been merged.

Add support for timestamps with signed tz offsets

Suricata outputs timestamp like `2015-04-13T11:32:45.143323-0200`,
whereas Zeek does `2015-04-13T11:32:45.143323Z02:00`. This commit lets
us parse both.

package.json

@@ -173,7 +173,7 @@
  "styled-components": "^5.1.1",
  "valid-url": "^1.0.9",
  "zealot": "file:zealot",
- "zq": "git+https:/brimsec/zq.git#926efeda12740536d87fa2dd4c23817b858208ce"
+ "zq": "git+https:/brimsec/zq.git#2f8d90750ab46eda84acb3e3d4c1012ce5a5a518"
  },
  "optionalDependencies": {
  "electron-installer-debian": "^3.0.0",