CI: ok, let's try something different...

Maybe GitHub Actions dislikes passing this weird base64-encoded password directly on the jobs?... We'll try to set it up above, to see what happens.

.github/workflows/dotnet.yml

@@ -15,6 +15,9 @@ env:
     # We'll stick to net6.0, as 5.0 seems not to work as well as it should
     # - at least for testing purposes (gwyneth 20220418)
     DOTNET_VERSION: '6.0.4'
+    LMVTestAgentUsername: SecretAgentTest Resident
+    LMVTestAgentPassword:
+      secure: bOoXrGfLiHjZlCG1tJ+nDQ==
 
 jobs:
   build:
@@ -37,7 +40,4 @@ jobs:
       run: dotnet build --no-restore LibreMetaverse.ReleaseNoGui.sln
     - name: Test
       run: dotnet test --no-build --verbosity normal LibreMetaverse.ReleaseNoGui.sln
-      env:
-        LMVTestAgentUsername: SecretAgentTest Resident
-        LMVTestAgentPassword:
-          secure: bOoXrGfLiHjZlCG1tJ+nDQ==
+