Fix _ftp_parse._parse_time for Python ≥ 3.15

time.strptime processing of formats that contain %d but not %Y was
deprecated in Python 3.13, and removed from Python 3.15
(python/cpython#70647). Deal with this by
adding %Y and having it parse the current year, in line with prior
semantics.

This fixes these tests/test_ftp_parse.py TestFTPParse tests by restoring
the ability to parse the '%b %d %H:%M' time format.
 - test_decode_linux
 - test_decode_linux_sticky
 - test_decode_linux_suid
 - test_parse_time

Author: markmentovai

fs/_ftp_parse.py

@@ -86,7 +86,15 @@ def parse_line(line):
 def _parse_time(t, formats):
     for frmt in formats:
         try:
-            _t = time.strptime(t, frmt)
+            if "%d" in frmt and "%Y" not in frmt:
+                # Cope with https://github.com/python/cpython/issues/70647
+                # (deprecated in 3.13, removed in 3.15) by adding a year to
+                # achieve prior semantics.
+                _t = time.strptime(
+                    time.strftime("%Y!", time.localtime()) + t, "%Y!" + frmt
+                )
+            else:
+                _t = time.strptime(t, frmt)
             break
         except ValueError:
             continue