Bump vector_math to 1eee95b15e5d35cf519514cc253037b19705fb7a

Changes:
```
> git log --format="%C(auto) %h %s" feb2a18..1eee95b
 https://dart.googlesource.com/external/github.com/google/vector_math.dart.git/+/1eee95b refactor the locations of the 'noise.dart' part files (#273)
 https://dart.googlesource.com/external/github.com/google/vector_math.dart.git/+/8c5c72b add markdown badges; configure dependabot (#274)

```

Diff: https://dart.googlesource.com/external/github.com/google/vector_math.dart.git/+/feb2a188b1ecd863fd92500453b26a90048e71ad~..1eee95b15e5d35cf519514cc253037b19705fb7a/
Change-Id: I6da5e3e7c0950c1f2ac407455d7d4be92135c19d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/260074
Auto-Submit: Devon Carew <devoncarew@google.com>
Reviewed-by: Nate Bosch <nbosch@google.com>
Commit-Queue: Nate Bosch <nbosch@google.com>

DEPS

@@ -155,7 +155,7 @@ vars = {
   "test_rev": "b0a39cc64807152e95075a8a2b7d216c4bf0b05b",
   "typed_data_rev": "6369490ede1c87a4a5758304a606a6e4eee364b9",
   "usage_rev": "e287a72228974886d8a3b40ddcdf12f69d7c6a22",
-  "vector_math_rev": "feb2a188b1ecd863fd92500453b26a90048e71ad",
+  "vector_math_rev": "1eee95b15e5d35cf519514cc253037b19705fb7a",
   "watcher_rev": "e00c0ea769e32821d91c0880da8eb736839a6e6d",
   "web_components_rev": "8f57dac273412a7172c8ade6f361b407e2e4ed02",
   "web_socket_channel_rev": "4b46c0c4196a5e76c2b0e2589ed37de247d35938",