Update known warnings for Python 3.7 (#19333)

After seting 3.7 the default (#19317) the warning printed by
Python during importing all providers (specifically apache beam)
has slightly changed. Apparently collections.abc warning was
a bit more "scary" - warning that it's 3.9 not 3.10 where the
old collection imports will stop working (Note that actually
this did not happen even in 3.10, apparently)

This PR fixes the "known" warning message to match it but also
a separate PR (apache/beam#15850) was
opened to Beam to get rid of the warnings altogether.

Also seems 'dns` stopped generating this warning so I removed it
and in case warnings are generated, they are printed outside of
the folded group, so that it's immediately visible.

(cherry picked from commit 4bb1317)

dev/provider_packages/prepare_provider_packages.py

@@ -2026,6 +2026,9 @@ def summarise_total_vs_bad_and_warnings(total: int, bad: int, warns: List[warnin
         console.print()
         raise_error = True
     if warns:
+        if os.environ.get('GITHUB_ACTIONS'):
+            # Ends group in GitHub Actions so that the errors are immediately visible in CI log
+            console.print("::endgroup::")
         console.print()
         console.print("[red]Unknown warnings generated:[/]")
         console.print()
@@ -2072,14 +2075,9 @@ def summarise_total_vs_bad_and_warnings(total: int, bad: int, warns: List[warnin
     ),
     (
         "Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since"
-        " Python 3.3, and in 3.10 it will stop working",
+        " Python 3.3,and in 3.9 it will stop working",
         "apache_beam",
     ),
-    (
-        "Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since"
-        " Python 3.3, and in 3.10 it will stop working",
-        "dns",
-    ),
     (
         'pyarrow.HadoopFileSystem is deprecated as of 2.0.0, please use pyarrow.fs.HadoopFileSystem instead.',
         "papermill",