fix currently failing main branch #2893

Will run 3 of 3 specs
------------------------------
• [FAILED] [1.022 seconds]
Volumesnapshot reconciler [It] should fence the target pod when there are no volumesnapshots
/home/runner/work/cloudnative-pg/cloudnative-pg/pkg/reconciler/backup/volumesnapshot/reconciler_test.go:90

  [FAILED] Timed out after 1.000s.
  Expected
      <string>: Normal FencePod Fencing Pod clusterName-2
  to contain substring
      <string>: Requesting fencing for Pod clusterName-2
  In [It] at: /home/runner/work/cloudnative-pg/cloudnative-pg/pkg/reconciler/backup/volumesnapshot/reconciler_test.go:118 @ 09/27/23 08:12:23.545
------------------------------
•
------------------------------
• [FAILED] [1.003 seconds]
Volumesnapshot reconciler [It] should unfence the target pod when the snapshots are ready
/home/runner/work/cloudnative-pg/cloudnative-pg/pkg/reconciler/backup/volumesnapshot/reconciler_test.go:176

  [FAILED] Timed out after 1.001s.
  Expected
      <bool>: false
  to be true
  In [It] at: /home/runner/work/cloudnative-pg/cloudnative-pg/pkg/reconciler/backup/volumesnapshot/reconciler_test.go:233 @ 09/27/23 08:12:24.754
------------------------------

Summarizing 2 Failures:
  [FAIL] Volumesnapshot reconciler [It] should fence the target pod when there are no volumesnapshots
  /home/runner/work/cloudnative-pg/cloudnative-pg/pkg/reconciler/backup/volumesnapshot/reconciler_test.go:118
  [FAIL] Volumesnapshot reconciler [It] should unfence the target pod when the snapshots are ready
  /home/runner/work/cloudnative-pg/cloudnative-pg/pkg/reconciler/backup/volumesnapshot/reconciler_test.go:233

Ran 3 of 3 Specs in 2.230 seconds
FAIL! -- 1 Passed | 2 Failed | 0 Pending | 0 Skipped
--- FAIL: TestReconciler (2.23s)