fix: exclude purchase_invoice with boe in gstr3b

(cherry picked from commit c2bf053)

Author: Sanket322

india_compliance/gst_india/doctype/gstr_3b_report/gstr_3b_report.py

@@ -321,6 +321,7 @@ def get_inward_nil_exempt(self, state):
             and (i.gst_treatment != 'Taxable' or p.gst_category = 'Registered Composition') and
             month(p.posting_date) = %s and year(p.posting_date) = %s
             and p.company = %s and p.company_gstin = %s
+            and p.gst_category != "Overseas"
             """,
             (self.month_no, self.year, self.company, self.gst_details.get("gstin")),
             as_dict=1,

india_compliance/gst_india/report/gstr_3b_details/gstr_3b_details.py

@@ -416,6 +416,7 @@ def get_inward_nil_exempt(self):
                     purchase_invoice.company_gstin
                     != IfNull(purchase_invoice.supplier_gstin, "")
                 )
+                & (purchase_invoice.gst_category != "Overseas")
             )
             .groupby(purchase_invoice.name)
         )