Bugfix/lock dio version use working version in example (#46)

* - locked dio version, to make sure flagsmith is compatible to dio
- see #45

* - re-executed "flutter pub get" to not use the non-working version 4.0.6 in the example - the example throws errors.

example/pubspec.lock

@@ -21,7 +21,7 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.8.2"
+    version: "2.9.0"
   bloc:
     dependency: transitive
     description:
@@ -42,7 +42,7 @@ packages:
       name: characters
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
+    version: "1.2.1"
   charcode:
     dependency: transitive
     description:
@@ -56,7 +56,7 @@ packages:
       name: clock
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.1.1"
   collection:
     dependency: "direct main"
     description:
@@ -84,7 +84,7 @@ packages:
       name: dio
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.0.6"
+    version: "4.0.4"
   encrypt:
     dependency: transitive
     description:
@@ -105,7 +105,7 @@ packages:
       name: fake_async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.0"
+    version: "1.3.1"
   ffi:
     dependency: transitive
     description:
@@ -239,21 +239,21 @@ packages:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.11"
+    version: "0.12.12"
   material_color_utilities:
     dependency: transitive
     description:
       name: material_color_utilities
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.4"
+    version: "0.1.5"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.7.0"
+    version: "1.8.0"
   nested:
     dependency: transitive
     description:
@@ -267,7 +267,7 @@ packages:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.1"
+    version: "1.8.2"
   path_drawing:
     dependency: transitive
     description:
@@ -440,7 +440,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.2"
+    version: "1.9.0"
   stack_trace:
     dependency: transitive
     description:
@@ -461,21 +461,21 @@ packages:
       name: string_scanner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.1.1"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
+    version: "1.2.1"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.9"
+    version: "0.4.12"
   typed_data:
     dependency: transitive
     description:

pubspec.lock

@@ -133,7 +133,7 @@ packages:
       name: dio
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.0.0"
+    version: "4.0.4"
   encrypt:
     dependency: transitive
     description:

pubspec.yaml

@@ -14,7 +14,7 @@ environment:
 dependencies:
   flagsmith_flutter_core: ^2.3.1
   collection: ^1.15.0
-  dio: ^4.0.0
+  dio: 4.0.4
   rxdart: ^0.27.5
 dev_dependencies:
   test:  ">=1.16.0 <=1.17.12"