Using latest version of mod-tidier which supports go.{mod,sum} check (#…

…97)

As go mod tidy does have occasion to change `go.mod` files in addition
to `go.sum` (e.g. when a transitive dependency changes from an
implicit to explicit dependency), this new flag (`gomodsum_only`)
allows the build to pass so long as the only files changed are either
`go.mod` or `go.sum`

.github/workflows/dependabot.yml

@@ -18,7 +18,7 @@ jobs:
       id: modtidy
       with:
         gomods: '**/go.mod'
-        gosum_only: true
+        gomodsum_only: true
     - uses: stefanzweifel/git-auto-commit-action@v4
       id: autocommit
       with: