build(deps): bump pdf-codec to 2.2.20

Triggered instantly via repository_dispatch when pdf-codec published its own release,
rather than waiting for the next scheduled Dependabot scan.

Author: github-actions[bot]

package.json

@@ -111,7 +111,7 @@
     "ink-testing-library": "^4.0.0",
     "lint-staged": "^17.3.0",
     "odf.js": "^2.7.10",
-    "pdf-codec": "^2.2.13",
+    "pdf-codec": "^2.2.20",
     "publint": "^0.3.22",
     "semantic-release": "^25.0.8",
     "tsdown": "^0.22.14",