chore: Bump gitversion.tool from 6.3.0 to 6.4.0

---
updated-dependencies:
- dependency-name: gitversion.tool
  dependency-version: 6.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.config/dotnet-tools.json

@@ -4,18 +4,24 @@
   "tools": {
     "dotnet-reportgenerator-globaltool": {
       "version": "5.4.8",
-      "commands": ["reportgenerator"],
+      "commands": [
+        "reportgenerator"
+      ],
       "rollForward": false
     },
     "gitreleasemanager.tool": {
       "version": "0.20.0",
-      "commands": ["dotnet-gitreleasemanager"],
+      "commands": [
+        "dotnet-gitreleasemanager"
+      ],
       "rollForward": false
     },
     "gitversion.tool": {
-      "version": "6.3.0",
-      "commands": ["dotnet-gitversion"],
+      "version": "6.4.0",
+      "commands": [
+        "dotnet-gitversion"
+      ],
       "rollForward": false
     }
   }
-}
+}