[3.12] gh-129726: Break `gzip.GzipFile` reference loop (GH-130055) (#130670)

[3.12] gh-129726: Break `gzip.GzipFile` reference loop (GH-130055) (#130670)

gh-129726: Break `gzip.GzipFile` reference loop (GH-130055)

A reference loop was resulting in the `fileobj` held by the `GzipFile`
being closed before the `GzipFile`.

The issue started with gh-89550 in 3.12, but was hidden in most cases
until 3.13 when gh-62948 made it more visible.
(cherry picked from commit 7f39137662f637518a74228286e7ec675fa4e27d)

Co-authored-by: Cody Maloney <cmaloney@users.noreply.github.com>