Ignore fingerprint during import in TestAccComputeInstanceSettings_update, as it often changes

[modular-magician]

Addresses a flaky test with ~50% failure rate

------- Stdout: -------
=== RUN   TestAccComputeInstanceSettings_update
=== PAUSE TestAccComputeInstanceSettings_update
=== CONT  TestAccComputeInstanceSettings_update
    vcr_utils.go:152: Step 2/6 error running import: ImportStateVerify attributes not equivalent. Difference is shown below. The - symbol indicates attributes missing after import.
          map[string]string{
        -   "fingerprint":          "wQH2_MqU01c=",
        +   "fingerprint":          "TyiC4TGN8NA=",
        -   "metadata.#":           "1",
        -   "metadata.0.%":         "1",
        -   "metadata.0.items.%":   "1",
        -   "metadata.0.items.foo": "baz",
          }
--- FAIL: TestAccComputeInstanceSettings_update (71.24s)
FAIL

Release Note Template for Downstream PRs (will be copied)

Derived from GoogleCloudPlatform/magic-modules#11312