chore: remove parallel running in integration tests (#8904)

# Which Problems Are Solved

Integration tests are flaky due to eventual consistency.

# How the Problems Are Solved

Remove t.Parallel so that less concurrent requests on multiple instance
happen. This allows the projections to catch up more easily.

# Additional Changes

- none

# Additional Context

- none

internal/api/grpc/resources/action/v3alpha/integration_test/execution_target_test.go

@@ -26,7 +26,6 @@ import (
 )
 
 func TestServer_ExecutionTarget(t *testing.T) {
-	t.Parallel()
 	instance := integration.NewInstance(CTX)
 	ensureFeatureEnabled(t, instance)
 	isolatedIAMOwnerCTX := instance.WithAuthorization(CTX, integration.UserTypeIAMOwner)

internal/api/grpc/resources/action/v3alpha/integration_test/execution_test.go

@@ -25,7 +25,6 @@ func executionTargetsSingleInclude(include *action.Condition) []*action.Executio
 }
 
 func TestServer_SetExecution_Request(t *testing.T) {
-	t.Parallel()
 	instance := integration.NewInstance(CTX)
 	ensureFeatureEnabled(t, instance)
 	isolatedIAMOwnerCTX := instance.WithAuthorization(CTX, integration.UserTypeIAMOwner)
@@ -207,7 +206,6 @@ func TestServer_SetExecution_Request(t *testing.T) {
 }
 
 func TestServer_SetExecution_Request_Include(t *testing.T) {
-	t.Parallel()
 	instance := integration.NewInstance(CTX)
 	ensureFeatureEnabled(t, instance)
 	isolatedIAMOwnerCTX := instance.WithAuthorization(CTX, integration.UserTypeIAMOwner)
@@ -346,7 +344,6 @@ func TestServer_SetExecution_Request_Include(t *testing.T) {
 }
 
 func TestServer_SetExecution_Response(t *testing.T) {
-	t.Parallel()
 	instance := integration.NewInstance(CTX)
 	ensureFeatureEnabled(t, instance)
 	isolatedIAMOwnerCTX := instance.WithAuthorization(CTX, integration.UserTypeIAMOwner)
@@ -528,7 +525,6 @@ func TestServer_SetExecution_Response(t *testing.T) {
 }
 
 func TestServer_SetExecution_Event(t *testing.T) {
-	t.Parallel()
 	instance := integration.NewInstance(CTX)
 	ensureFeatureEnabled(t, instance)
 	isolatedIAMOwnerCTX := instance.WithAuthorization(CTX, integration.UserTypeIAMOwner)
@@ -716,7 +712,6 @@ func TestServer_SetExecution_Event(t *testing.T) {
 }
 
 func TestServer_SetExecution_Function(t *testing.T) {
-	t.Parallel()
 	instance := integration.NewInstance(CTX)
 	ensureFeatureEnabled(t, instance)
 	isolatedIAMOwnerCTX := instance.WithAuthorization(CTX, integration.UserTypeIAMOwner)

internal/api/grpc/resources/action/v3alpha/integration_test/query_test.go

@@ -22,7 +22,6 @@ import (
 )
 
 func TestServer_GetTarget(t *testing.T) {
-	t.Parallel()
 	instance := integration.NewInstance(CTX)
 	ensureFeatureEnabled(t, instance)
 	isolatedIAMOwnerCTX := instance.WithAuthorization(CTX, integration.UserTypeIAMOwner)
@@ -237,7 +236,6 @@ func TestServer_GetTarget(t *testing.T) {
 }
 
 func TestServer_ListTargets(t *testing.T) {
-	t.Parallel()
 	instance := integration.NewInstance(CTX)
 	ensureFeatureEnabled(t, instance)
 	isolatedIAMOwnerCTX := instance.WithAuthorization(CTX, integration.UserTypeIAMOwner)
@@ -503,7 +501,6 @@ func TestServer_ListTargets(t *testing.T) {
 }
 
 func TestServer_SearchExecutions(t *testing.T) {
-	t.Parallel()
 	instance := integration.NewInstance(CTX)
 	ensureFeatureEnabled(t, instance)
 	isolatedIAMOwnerCTX := instance.WithAuthorization(CTX, integration.UserTypeIAMOwner)

internal/api/grpc/resources/action/v3alpha/integration_test/target_test.go

@@ -21,7 +21,6 @@ import (
 )
 
 func TestServer_CreateTarget(t *testing.T) {
-	t.Parallel()
 	instance := integration.NewInstance(CTX)
 	ensureFeatureEnabled(t, instance)
 	isolatedIAMOwnerCTX := instance.WithAuthorization(CTX, integration.UserTypeIAMOwner)