Bump pub.

New commits include:
```
git log --format="%C(auto) %h %s" 11c2a0978e66fbc2c182dc6a8174db1a3651276c..3c14d86a67db7207bbc9f654ac49ee60e08e5240
 3c14d86a Test cases with core.ignoreCase = true / false (#3025)
 937cd3be Fix CR LF in .gitignore / .pubignore (#3026)
 610254f7 Add test to ignore dot-files (#2983)
 c24d7478 Fixes linter warnings (#3021)
```

Change-Id: I49f0fc3a2360b0e1e4e009a4fff2a702163cd6b7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/202481
Auto-Submit: Jonas Jensen <[email protected]>
Commit-Queue: Jonas Jensen <[email protected]>
Commit-Queue: Alexander Thomas <[email protected]>
Reviewed-by: Alexander Thomas <[email protected]>

Author: jonasfj

DEPS

@@ -142,7 +142,7 @@ vars = {
   "pool_rev": "7abe634002a1ba8a0928eded086062f1307ccfae",
   "process_rev": "56ece43b53b64c63ae51ec184b76bd5360c28d0b",
   "protobuf_rev": "0d03fd588df69e9863e2a2efc0059dee8f18d5b2",
-  "pub_rev": "11c2a0978e66fbc2c182dc6a8174db1a3651276c",
+  "pub_rev": "3c14d86a67db7207bbc9f654ac49ee60e08e5240",
   "pub_semver_rev": "f50d80ef10c4b2fa5f4c8878036a4d9342c0cc82",
   "resource_rev": "6b79867d0becf5395e5819a75720963b8298e9a7",
   "root_certificates_rev": "7e5ec82c99677a2e5b95ce296c4d68b0d3378ed8",