adjust pattern for load_seed macro for snowflake

[tuvaforrest]

Describe the bug
I think effectively, the pattern for loading to everything except snowflake from s3/gcs is

s3://{uri}/{patten}}.*

where snowflake is

s3://{uri}./{patten}}.

this makes it so if we add another folder with the same prefix that contains the same file, it will get loaded. e.g.

s3://tuva_public_resources/terminology_test/icd_10_cm.csv

will also get loaded in snowflake.

To Reproduce
add a subfolder wtih the same prefix as terminology or value_sets with the same named file in it (but dont really)

Expected behavior
no dupes

Screenshots

Environment

• Package version (e.g. 0.6.0): 0.8.0
• Data warehouse (e.g. Snowflake): snowflake

Additional context
I think line 99 of load_seed.sql should be this

pattern = '/{{pattern}}.*';

instead of this

pattern = './{{pattern}}.';

or a better solution may be to add the forward slash to the uri

but we should test a variety of scenarios before adjusting