Fix version tables for vendor_sample_file

not sure why alembic is behaving differently for those now, when
alembic revision is generated for new versioned table..

ideally could solve the underlying problem there as this will affect
everyone...

rattail/db/alembic/versions/0aeaac17cd6e_fix_vendor_sample_file_version_table.py

@@ -0,0 +1,55 @@
+# -*- coding: utf-8; -*-
+"""fix vendor sample file version table
+
+Revision ID: 0aeaac17cd6e
+Revises: 524373deb98e
+Create Date: 2023-05-08 21:35:25.611702
+
+"""
+
+from __future__ import unicode_literals, absolute_import
+
+# revision identifiers, used by Alembic.
+revision = '0aeaac17cd6e'
+down_revision = '524373deb98e'
+branch_labels = None
+depends_on = None
+
+from alembic import op
+import sqlalchemy as sa
+import rattail.db.types
+
+
+
+def upgrade():
+
+    # vendor_sample_file
+    op.alter_column('vendor_sample_file_version', 'vendor_uuid',
+               existing_type=sa.VARCHAR(length=32),
+               nullable=True)
+    op.alter_column('vendor_sample_file_version', 'file_type',
+               existing_type=sa.VARCHAR(length=100),
+               nullable=True)
+    op.alter_column('vendor_sample_file_version', 'filename',
+               existing_type=sa.VARCHAR(length=100),
+               nullable=True)
+    op.alter_column('vendor_sample_file_version', 'created_by_uuid',
+               existing_type=sa.VARCHAR(length=32),
+               nullable=True)
+
+
+def downgrade():
+
+    # vendor_sample_file
+    op.alter_column('vendor_sample_file_version', 'created_by_uuid',
+               existing_type=sa.VARCHAR(length=32),
+               nullable=False)
+    op.alter_column('vendor_sample_file_version', 'filename',
+               existing_type=sa.VARCHAR(length=100),
+               nullable=False)
+    op.alter_column('vendor_sample_file_version', 'file_type',
+               existing_type=sa.VARCHAR(length=100),
+               nullable=False)
+    op.alter_column('vendor_sample_file_version', 'vendor_uuid',
+               existing_type=sa.VARCHAR(length=32),
+               nullable=False)