Bump golang.org/x/mod from 0.10.0 to 0.21.0

Bumps [golang.org/x/mod](https://github.com/golang/mod) from 0.10.0 to 0.21.0.
- [Commits](golang/mod@v0.10.0...v0.21.0)

---
updated-dependencies:
- dependency-name: golang.org/x/mod
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

go.mod

@@ -2,4 +2,4 @@ module github.com/k-yomo/fixtory/v2
 
 go 1.18
 
-require golang.org/x/mod v0.10.0
+require golang.org/x/mod v0.21.0

go.sum

@@ -1,2 +1,2 @@
-golang.org/x/mod v0.10.0 h1:lFO9qtOdlre5W1jxS3r/4szv2/6iXxScdzjoBMXNhYk=
-golang.org/x/mod v0.10.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/mod v0.21.0 h1:vvrHzRwRfVKSiLrG+d4FMl/Qi4ukBCE6kZlTUkDYRT0=
+golang.org/x/mod v0.21.0/go.mod h1:6SkKJ3Xj0I0BrPOZoBy3bdMptDDU9oJrpohJ3eWZ1fY=