🌱(deps): Bump golang.org/x/mod in the all-go-deps group

Bumps the all-go-deps group with 1 update: [golang.org/x/mod](https://github.com/golang/mod).


Updates `golang.org/x/mod` from 0.20.0 to 0.21.0
- [Commits](golang/mod@v0.20.0...v0.21.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/rivo/tview v0.0.0-20240413115534-b0d41c484b95
 	github.com/transparency-dev/formats v0.0.0-20230914071414-5732692f1e50
 	github.com/transparency-dev/merkle v0.0.2
-	golang.org/x/mod v0.20.0
+	golang.org/x/mod v0.21.0
 	golang.org/x/sync v0.8.0
 	k8s.io/klog/v2 v2.130.1
 )

go.sum

@@ -27,8 +27,8 @@ golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACk
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
-golang.org/x/mod v0.20.0 h1:utOm6MM3R3dnawAiJgn0y+xvuYRsm1RKM/4giyfDgV0=
-golang.org/x/mod v0.20.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
+golang.org/x/mod v0.21.0 h1:vvrHzRwRfVKSiLrG+d4FMl/Qi4ukBCE6kZlTUkDYRT0=
+golang.org/x/mod v0.21.0/go.mod h1:6SkKJ3Xj0I0BrPOZoBy3bdMptDDU9oJrpohJ3eWZ1fY=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=