FileConventions.Test: new test for ver. in env

Added a failing test for finding inconsistent versions in
Github CI workflows when versions are stored in env vars
and are referenced with `env.` prefix (e.g. `env.FOO`).

src/FileConventions.Test/DummyFiles/DummyWorkflowsWithEnvPrefixed/DummyCIWithPulumiVersionInEnvPrefixedV2.0.0.yml

@@ -0,0 +1,17 @@
+name: CI
+
+on: [push, pull_request]
+
+env:
+  PULUMI_VERSION: 2.0.0
+
+jobs:
+  jobA:
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup Pulumi CLI
+        with:
+          pulumi-version: ${{ env.PULUMI_VERSION }}
+      - name: Print "Hello World!"
+        run: echo "Hello World!"

src/FileConventions.Test/DummyFiles/DummyWorkflowsWithEnvPrefixed/DummyCIWithPulumiVersionInEnvPrefixedV2.0.1.yml

@@ -0,0 +1,17 @@
+name: CI
+
+on: [push, pull_request]
+
+env:
+  PULUMI_VERSION: 2.0.1
+
+jobs:
+  jobA:
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup Pulumi CLI
+        with:
+          pulumi-version: ${{ env.PULUMI_VERSION }}
+      - name: Print "Hello World!"
+        run: echo "Hello World!"

src/FileConventions.Test/FileConventions.Test.fs

@@ -429,6 +429,18 @@ let DetectInconsistentVersionsInGitHubCI2() =
 
     Assert.That(DetectInconsistentVersionsInGitHubCI fileInfo, Is.EqualTo true)
 
+[<Test>]
+let DetectInconsistentVersionsInGitHubCI3() =
+    let fileInfo =
+        DirectoryInfo(
+            Path.Combine(
+                dummyFilesDirectory.FullName,
+                "DummyWorkflowsWithEnvPrefixed"
+            )
+        )
+
+    Assert.That(DetectInconsistentVersionsInGitHubCI fileInfo, Is.EqualTo true)
+
 [<Test>]
 let DetectInconsistentVersionsInNugetRefsInFSharpScripts1() =
     let fileInfos =