chore: resolve dependabot vulnerabilities via pnpm overrides (#163)

* chore: fix audit vulnerabilities with pnpm overrides

* fix: reduce cover generation concurrency in CI

* ci: increase node memory for astro build

* fix: add mermaid render fallback in build

* chore: narrow audit fixes to three open high alerts

Author: wangsijie

package.json

@@ -58,9 +58,11 @@
       "devalue@>=5.1.0 <5.6.2": "^5.6.2",
       "h3@<=1.15.4": "^1.15.5",
       "devalue@>=5.3.0 <=5.6.1": "^5.6.2",
-      "tar@<7.5.7": "^7.5.7",
+      "tar@<7.5.8": ">=7.5.8",
       "lodash-es@>=4.0.0 <=4.17.22": "^4.17.23",
-      "lodash@>=4.0.0 <=4.17.22": "^4.17.23"
+      "lodash@>=4.0.0 <=4.17.22": "^4.17.23",
+      "axios@>=1.0.0 <=1.13.4": ">=1.13.5",
+      "minimatch@>=9.0.0 <9.0.6": ">=9.0.6"
     },
     "patchedDependencies": {
       "playwright-core@1.48.2": "patches/playwright-core@1.48.2.patch"