Bump mvdan.cc/gofumpt from 0.8.0 to 0.9.0 in /.ci/tools

Bumps [mvdan.cc/gofumpt](https://github.com/mvdan/gofumpt) from 0.8.0 to 0.9.0.
- [Release notes](https://github.com/mvdan/gofumpt/releases)
- [Changelog](https://github.com/mvdan/gofumpt/blob/master/CHANGELOG.md)
- [Commits](mvdan/gofumpt@v0.8.0...v0.9.0)

---
updated-dependencies:
- dependency-name: mvdan.cc/gofumpt
  dependency-version: 0.9.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.ci/tools/go.mod

@@ -13,7 +13,7 @@ require (
 	github.com/rhysd/actionlint v1.7.7
 	github.com/terraform-linters/tflint v0.58.1
 	golang.org/x/tools v0.36.0
-	mvdan.cc/gofumpt v0.8.0
+	mvdan.cc/gofumpt v0.9.0
 )
 
 require (

.ci/tools/go.sum

@@ -2850,8 +2850,8 @@ modernc.org/strutil v1.1.3/go.mod h1:MEHNA7PdEnEwLvspRMtWTNnp2nnyvMfkimT1NKNAGbw
 modernc.org/tcl v1.13.1/go.mod h1:XOLfOwzhkljL4itZkK6T72ckMgvj0BDsnKNdZVUOecw=
 modernc.org/token v1.0.0/go.mod h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM=
 modernc.org/z v1.5.1/go.mod h1:eWFB510QWW5Th9YGZT81s+LwvaAs3Q2yr4sP0rmLkv8=
-mvdan.cc/gofumpt v0.8.0 h1:nZUCeC2ViFaerTcYKstMmfysj6uhQrA2vJe+2vwGU6k=
-mvdan.cc/gofumpt v0.8.0/go.mod h1:vEYnSzyGPmjvFkqJWtXkh79UwPWP9/HMxQdGEXZHjpg=
+mvdan.cc/gofumpt v0.9.0 h1:W0wNHMSvDBDIyZsm3nnGbVfgp5AknzBrGJnfLCy501w=
+mvdan.cc/gofumpt v0.9.0/go.mod h1:3xYtNemnKiXaTh6R4VtlqDATFwBbdXI8lJvH/4qk7mw=
 mvdan.cc/unparam v0.0.0-20250301125049-0df0534333a4 h1:WjUu4yQoT5BHT1w8Zu56SP8367OuBV5jvo+4Ulppyf8=
 mvdan.cc/unparam v0.0.0-20250301125049-0df0534333a4/go.mod h1:rthT7OuvRbaGcd5ginj6dA2oLE7YNlta9qhBNNdCaLE=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=