Fix test failures when run without env vars (#2356)

## Description

Either skip tests that require env vars or have them use mock credentials if they don't need access to external services.

## Does this PR need a docs update or release note?

- [ ] ✅ Yes, it's included
- [ ] 🕐 Yes, but in a later PR
- [x] ⛔ No 

## Type of change

- [ ] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [x] 🤖 Test
- [ ] 💻 CI/Deployment
- [x] 🧹 Tech Debt/Cleanup

## Issue(s)

* closes #2354

## Test Plan

- [x] 💪 Manual
- [ ] ⚡ Unit test
- [ ] 💚 E2E

src/internal/connector/discovery/api/beta_service_test.go

@@ -22,7 +22,7 @@ func TestBetaUnitSuite(t *testing.T) {
 
 func (suite *BetaUnitSuite) TestBetaService_Adapter() {
 	t := suite.T()
-	a := tester.NewM365Account(t)
+	a := tester.NewMockM365Account(t)
 	m365, err := a.M365Config()
 	require.NoError(t, err)
 

src/internal/connector/graph/betasdk/beta_client_test.go

@@ -18,6 +18,12 @@ type BetaClientSuite struct {
 }
 
 func TestBetaClientSuite(t *testing.T) {
+	tester.RunOnAny(
+		t,
+		tester.CorsoCITests,
+		tester.CorsoGraphConnectorTests,
+	)
+
 	suite.Run(t, new(BetaClientSuite))
 }