alembic: Turn off execute bit on non-executable python scripts

...t-db-manage/cdr/versions/210693f3123d_create_cdr_table.py

...nage/config/versions/10aedae86a32_add_outgoing_enum_va.py

...ig/versions/1758e8bbf6b_increase_useragent_column_size.py

...ge/config/versions/21e526ad3040_add_pjsip_debug_option.py

...manage/config/versions/23530d604b96_add_rpid_immediate.py

...anage/config/versions/28887f25a46f_create_queue_tables.py

...sions/2fc7930b41b3_add_pjsip_endpoint_options_for_12_1.py

...nage/config/versions/43956d550a44_add_tables_for_pjsip.py

...anage/config/versions/4c573e7135bd_fix_tos_field_types.py

...t-db-manage/config/versions/4da0c5f79a9c_create_tables.py

...g/versions/5139253c0423_make_q_member_uniqueid_autoinc.py

...-manage/config/versions/581a4264e537_adding_extensions.py

contrib/ast-db-manage/env.py

...l/versions/39428242f7f5_increase_recording_column_size.py

...db-manage/voicemail/versions/a2e9769475e_create_tables.py