chore(deps): update dependency dotnet-outdated-tool to 4.6.8 (#1468)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.config/dotnet-tools.json

@@ -3,7 +3,7 @@
   "isRoot": true,
   "tools": {
     "dotnet-outdated-tool": {
-      "version": "4.6.7",
+      "version": "4.6.8",
       "commands": [
         "dotnet-outdated"
       ],