Ignore cert errors when running wdspec tests. (#36327)

This change makes the wdspec configuration match our other browser
configurations to account for #30080.

Testing: Tested locally, since we don't run webdriver conformance tests
in CI yet. The STR from the issue do not reproduce the same problem any
longer.
Fixes: #36326.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

tests/wpt/meta/MANIFEST.json

@@ -510199,7 +510199,7 @@
         ]
        },
        "servo.py": [
-        "d0bf0a38ea3f48ef1921360e25ea9ec63e44ca7a",
+        "00d7eac0dfd5b235df36724be983d574a9dd9737",
         []
        ],
        "servodriver.py": [

tests/wpt/tests/tools/wptrunner/wptrunner/browsers/servo.py

@@ -113,6 +113,9 @@ class ServoWdspecBrowser(WebDriverBrowser):
         command = [self.binary,
                    f"--webdriver={self.port}",
                    "--hard-fail",
+                   # See https://github.com/servo/servo/issues/30080.
+                   # For some reason rustls does not like the certificate generated by the WPT tooling.
+                   "--ignore-certificate-errors",
                    "--headless"] + self.webdriver_args
         if self.binary_args:
             command += self.binary_args