chore(deps): bump github.com/celestiaorg/nmt from 0.21.0 to 0.22.0

Bumps [github.com/celestiaorg/nmt](https://github.com/celestiaorg/nmt) from 0.21.0 to 0.22.0.
- [Release notes](https://github.com/celestiaorg/nmt/releases)
- [Commits](celestiaorg/nmt@v0.21.0...v0.22.0)

---
updated-dependencies:
- dependency-name: github.com/celestiaorg/nmt
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

go.mod

@@ -5,7 +5,7 @@ go 1.21.5
 replace github.com/gogo/protobuf => github.com/regen-network/protobuf v1.3.3-alpha.regen.1
 
 require (
-	github.com/celestiaorg/nmt v0.21.0
+	github.com/celestiaorg/nmt v0.22.0
 	github.com/stretchr/testify v1.9.0
 	golang.org/x/exp v0.0.0-20231206192017-f3f8817b8deb
 	google.golang.org/protobuf v1.34.2

go.sum

@@ -1,7 +1,7 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/celestiaorg/nmt v0.21.0 h1:81MBqxNn3orByoiCtdNVjwi5WsLgMkzHwP02ZMhTBHM=
-github.com/celestiaorg/nmt v0.21.0/go.mod h1:ia/EpCk0enD5yO5frcxoNoFToz2Ghtk2i+blmCRjIY8=
+github.com/celestiaorg/nmt v0.22.0 h1:AGtfmBiVgreR1KkIV5R7XFNeMp/H4IUDLlBbLjZZ3zk=
+github.com/celestiaorg/nmt v0.22.0/go.mod h1:ia/EpCk0enD5yO5frcxoNoFToz2Ghtk2i+blmCRjIY8=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=