[3.12] add missing gc_collect() calls in sqlite3 tests (pythonGH-127446) (python#127501)

add missing gc_collect() calls in sqlite3 tests (pythonGH-127446)
(cherry picked from commit 2a373da)

Co-authored-by: CF Bolz-Tereick <[email protected]>

Author: miss-islington

Lib/test/test_sqlite3/test_regression.py

@@ -442,6 +442,7 @@ def test_table_lock_cursor_dealloc(self):
             con.commit()
             cur = con.execute("select t from t")
             del cur
+            support.gc_collect()
             con.execute("drop table t")
             con.commit()
 
@@ -457,6 +458,7 @@ def dup(v):
             con.create_function("dup", 1, dup)
             cur = con.execute("select dup(t) from t")
             del cur
+            support.gc_collect()
             con.execute("drop table t")
             con.commit()