CI: use ghcr.io/macbre/nginx-http3:1.27.0

[macbre]

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[macbre]

  ● Integration tests › /dom-operations.html › should have "jsSize" metric set properly
    assert.strictEqual(received, expected)
    Expected value to strictly be equal to:
      29734
    Received:
      29756
      118 |       Object.keys(test.metrics || {}).forEach((name) => {
      119 |         it(`should have "${name}" metric set properly`, () => {
    > 120 |           assert.strictEqual(results.getMetric(name), test.metrics[name]);
          |                  ^
      121 |         });
      122 |       });
      123 |
      at Object.strictEqual (test/integration.test.js:120:18)
  ● Integration tests › /browser-caching.html › should have "contentLength" metric set properly
    assert.strictEqual(received, expected)
    Expected value to strictly be equal to:
      30354
    Received:
      30376
      118 |       Object.keys(test.metrics || {}).forEach((name) => {
      119 |         it(`should have "${name}" metric set properly`, () => {
    > 120 |           assert.strictEqual(results.getMetric(name), test.metrics[name]);
          |                  ^
      121 |         });
      122 |       });
      123 |
      at Object.strictEqual (test/integration.test.js:120:18)