Bump ai to 2a5eb30492c4231624ae954e93aa1491e4aca84f

Changes:
```
> git log --format="%C(auto) %h %s" 47fa2fc..2a5eb30
 https://dart.googlesource.com/ai.git/+/2a5eb30 pass the provided root instead of the resolved root for project type detection (150)
 https://dart.googlesource.com/ai.git/+/16799ee Be more flexible about roots by comparing canonicalized paths (148)
 https://dart.googlesource.com/ai.git/+/cf7d67f create the working dir if it doesn't exist (147)

```

Diff: https://dart.googlesource.com/ai.git/+/47fa2fcf476a905b316282d9351e4ed063755ead..2a5eb30492c4231624ae954e93aa1491e4aca84f/
Change-Id: I48b0d075797d5a7a6b1ef3eadcb9b9b860da7c07
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/432020
Auto-Submit: Jake Macdonald <jakemac@google.com>
Reviewed-by: Devon Carew <devoncarew@google.com>
Commit-Queue: Devon Carew <devoncarew@google.com>
diff --git a/DEPS b/DEPS
index 2473359..b73c1ed 100644
--- a/DEPS
+++ b/DEPS
@@ -129,7 +129,7 @@
   ### /third_party/pkg dependencies
   # 'tools/rev_sdk_deps.dart' will rev pkg dependencies to their latest; put an
   # EOL comment after a dependency to instead pin at the current revision.
-  "ai_rev": "cf7d67f1e653cc9d8988ff0dc549eb7c357c3ef9",
+  "ai_rev": "2a5eb30492c4231624ae954e93aa1491e4aca84f",
   "core_rev": "635dfa32c261ba078438b74de397f2207904ca78", # https://github.com/dart-lang/core/pull/734
   "dartdoc_rev": "8e6a95c4aba8def4ef01ccc600b3a3cfb8f3cb9e",
   "ecosystem_rev": "815d4ba2e7d11f8695a26f6cbe1262e3b8ff8d0d",