Address warnings from the VCS workflow (#7966)

pyproject.toml

@@ -319,6 +319,9 @@ markers = [
 ]
 filterwarnings = [
     "ignore::DeprecationWarning:twisted.web.static",
+    # Jobs that do not report coverage disable it with --no-cov, which pytest-cov
+    # warns about because the coverage options below stay in place.
+    "ignore::pytest_cov.CovDisabledWarning",
     # Twisted doesn't close failed sockets after CannotListenError: https://github.com/twisted/twisted/issues/6108
     "ignore:Exception ignored in. <socket\\.socket.*laddr=..0\\.0\\.0\\.0., 0.:pytest.PytestUnraisableExceptionWarning",
 ]

tests/ignores.txt

@@ -1,3 +1,4 @@
 scrapy/core/downloader/handlers/http.py
 scrapy/extensions/statsmailer.py
+scrapy/interfaces.py
 scrapy/mail.py

tests/test_utils_console.py

@@ -122,6 +122,11 @@ class TestIPythonShell:
     @pytest.mark.skipif(
         sys.platform == "win32", reason="requires a POSIX pseudo-terminal"
     )
+    # The child of the pseudo-terminal fork execs right away, so the deadlocks
+    # that Python warns about cannot happen.
+    @pytest.mark.filterwarnings(
+        "ignore:.*is multi-threaded, use of forkpty:DeprecationWarning"
+    )
     @pytest.mark.parametrize(
         "script",
         [CONSOLE, CONSOLE_IN_RUNNING_LOOP],