tests/test_sprocs.py: Use type of `numeric(6, 5)` for numeric
tests/test_sprocs.py: Use type of `numeric(6, 5)` for numeric

Needed so that part after decimal point won't get truncated in
testNumeric

thegooglecodearchive/pymssql,djhenderson/pymssql,Alwnikrotikz/pymssql,google-code-export/pymssql,google-code-export/pymssql,AlanZatarain/pymssql,google-code-export/pymssql,djhenderson/pymssql,djhenderson/pymssql,AlanZatarain/pymssql,MunDaesik/pymssql,MunDaesik/pymssql,thegooglecodearchive/pymssql,Alwnikrotikz/pymssql,MunDaesik/pymssql,thegooglecodearchive/pymssql,Alwnikrotikz/pymssql,AlanZatarain/pymssql