[chore]: Bump github.com/uptrace/bun/dialect/sqlitedialect

Bumps [github.com/uptrace/bun/dialect/sqlitedialect](https://github.com/uptrace/bun) from 1.2.6 to 1.2.8.
- [Release notes](https://github.com/uptrace/bun/releases)
- [Changelog](https://github.com/uptrace/bun/blob/master/CHANGELOG.md)
- [Commits](https://github.com/uptrace/bun/compare/v1.2.6...v1.2.8)

---
updated-dependencies:
- dependency-name: github.com/uptrace/bun/dialect/sqlitedialect
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/github.com/uptrace/bun/query_merge.go

@@ -15,9 +15,10 @@ type MergeQuery struct {
 	baseQuery
 	returningQuery
 
-	using schema.QueryWithArgs
-	on    schema.QueryWithArgs
-	when  []schema.QueryAppender
+	using   schema.QueryWithArgs
+	on      schema.QueryWithArgs
+	when    []schema.QueryAppender
+	comment string
 }
 
 var _ Query = (*MergeQuery)(nil)
@@ -150,6 +151,14 @@ func (q *MergeQuery) When(expr string, args ...interface{}) *MergeQuery {
 
 //------------------------------------------------------------------------------
 
+// Comment adds a comment to the query, wrapped by /* ... */.
+func (q *MergeQuery) Comment(comment string) *MergeQuery {
+	q.comment = comment
+	return q
+}
+
+//------------------------------------------------------------------------------
+
 func (q *MergeQuery) Operation() string {
 	return "MERGE"
 }
@@ -159,6 +168,8 @@ func (q *MergeQuery) AppendQuery(fmter schema.Formatter, b []byte) (_ []byte, er
 		return nil, q.err
 	}
 
+	b = appendComment(b, q.comment)
+
 	fmter = formatterWithModel(fmter, q)
 
 	b, err = q.appendWith(fmter, b)