[ffi/sample] Rev up ffi dependency to fix compilation error.

Fixes https://github.com/dart-lang/sdk/issues/48689

Change-Id: Ief95a720114215a24b56b0983c37b7b617f6f8be
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/239123
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Commit-Queue: Alexander Aprelev <aam@google.com>
diff --git a/samples/ffi/sqlite/pubspec.yaml b/samples/ffi/sqlite/pubspec.yaml
index 1effadc..90e67f4 100644
--- a/samples/ffi/sqlite/pubspec.yaml
+++ b/samples/ffi/sqlite/pubspec.yaml
@@ -6,6 +6,6 @@
 environment:
   sdk: '>=2.12.0-0 <3.0.0'
 dependencies:
-  ffi: ^0.3.1-nullsafety.0
+  ffi: ^1.1.2
 dev_dependencies:
   test: ^1.16.0-nullsafety.12
diff --git a/samples_2/ffi/sqlite/pubspec.yaml b/samples_2/ffi/sqlite/pubspec.yaml
index 16771df..762107f 100644
--- a/samples_2/ffi/sqlite/pubspec.yaml
+++ b/samples_2/ffi/sqlite/pubspec.yaml
@@ -6,6 +6,6 @@
 environment:
   sdk: '>=2.1.0 <3.0.0'
 dependencies:
-  ffi: ^0.3.1-nullsafety.0
+  ffi: ^1.1.2
 dev_dependencies:
   test: ^1.5.3