debugging issues around specifying the latest patch release (#108)

* debugging issues around specifying the latest patch release

* exitCode as a field

* handle converting '3' to '3.0'

* wrap sdk values in quotes

* address process exit code issue

* restore int => double promotion code

* review comments

* comments

* set the process.exitCode value

* re-test process.exitCode

* remove temporary test

* Update build.yml

.github/workflows/dart.yml

@@ -94,7 +94,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        sdk: [2.19, 3.1]
+        sdk: [2.19, 3.0, 3.1]
       fail-fast: false
     steps:
       - uses: actions/checkout@v4

README.md

@@ -91,7 +91,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        sdk: [3.1, stable, beta, dev]
+        sdk: [3.1, stable, beta]
     steps:
       - uses: actions/checkout@v3
       - uses: dart-lang/setup-dart@v1

action.yml

@@ -7,7 +7,7 @@ inputs:
   sdk:
     description: >-
       This can be either the channel to install (i.e., 'stable', 'beta', 'dev'),
-      an SDK release version (i.e., `2.19`, `3.1`), or a specific SDK version
+      an SDK release version (i.e., '2.19', '3.1'), or a specific SDK version
       (i.e, '2.19.1', '3.0.0-1.4.beta').
     required: false
     default: "stable"