[shashank-tomar0]

Summary

Fixes #75.

This removes both DeprecationWarnings reported in the issue.

Changes

• src/commoncode/timeutils.py: time2tstamp() now uses
  datetime.now(timezone.utc).replace(tzinfo=None). Dropping tzinfo keeps
  the historical naive-UTC return value and the timestamp format unchanged.
• src/commoncode/archive.py: added a small _extractall() helper that always
  passes an explicit filter to TarFile.extractall() when the running Python
  supports it, with a TypeError fallback for older versions.
  • The default is fully_trusted, which preserves the historical extraction
    behavior when Python 3.14 changes the default filter to data.
  • The explicit filter argument of extract_tar() is now honored on every
    Python that supports it. Previously it was only passed on Python 3.14.
  • On Pythons without the filter argument (CI also runs 3.10) the argument
    is still ignored as before instead of raising a TypeError.

Tests

$ python -m pytest tests/test_timeutils.py tests/test_archive.py -q
20 passed

New coverage:

• test_time2tstamp_does_not_emit_deprecation_warnings
• test_extract_tar_does_not_emit_a_deprecation_warning
• test_extract_tar_raw_does_not_emit_a_deprecation_warning
• test_extract_tar_honors_an_explicit_filter
• test_extractall_falls_back_on_pythons_without_filters, which simulates a
  Python without tar extraction filters and checks the legacy call path.

test_extract_tar_honors_an_explicit_filter is skipped on Python versions
older than 3.12, where tarfile.FilterError does not exist.

The existing test_time2tstamp_tstamp2time_is_idempotent was updated to build
its datetime without utcnow() as well.

The full commoncode suite was also run locally (406 passed, 12 skipped, 1 failed). The single failure is
tests/test_distro.py::TestDistro::test_parse_os_release, which expects
tests/data/distro/os-release/ubuntu/ubuntu-artful.txt-expected.json. The
ubuntu-artful.txt fixture is a symlink in the repository, checked out as a
plain file on Windows, so this failure is unrelated to this change and
reproduces on unmodified main.

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