Update dependency diff to v8 (#107684)

* Update dependency diff to v8

* remove @types/diff

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Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Ashley Harrison <ashley.harrison@grafana.com>

package.json

@@ -118,7 +118,6 @@
     "@types/d3-force": "^3.0.0",
     "@types/d3-scale-chromatic": "3.1.0",
     "@types/debounce-promise": "3.1.9",
-    "@types/diff": "^7.0.0",
     "@types/eslint": "9.6.1",
     "@types/eslint-scope": "^3.7.7",
     "@types/file-saver": "2.0.7",
@@ -336,7 +335,7 @@
     "dangerously-set-html-content": "1.1.0",
     "date-fns": "4.1.0",
     "debounce-promise": "3.1.2",
-    "diff": "^7.0.0",
+    "diff": "^8.0.0",
     "fast-deep-equal": "^3.1.3",
     "fast-json-patch": "3.1.1",
     "file-saver": "2.0.5",