Could help decrease icons disappearing: Update PixiJS (#3478)

## Description:

Please put in next v30 update if possible.

Upgrade [PixiJS from 8.11.0 to their newest version
8.17.1](https://github.com/pixijs/pixijs/releases) and pixi-filters too.

This could help decrease occurance of this issue:
https://github.com/openfrontio/OpenFrontIO/issues/2147

Checked "Behavior Change" in their release notes and we aren't touched
by those. But some of the fixes, especially GC/memory leak, may help in
reducing "dissappearing structure icons". Update to destroy() now using
the new unload() could help too; we call destroy() directly on
ghoststructures and its possibly called elsewhere under the surface too.

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

tryout33

package.json

@@ -69,8 +69,8 @@
     "lit": "^3.3.1",
     "lit-markdown": "^1.3.2",
     "mrmime": "^2.0.0",
-    "pixi-filters": "^6.1.4",
-    "pixi.js": "^8.11.0",
+    "pixi-filters": "^6.1.5",
+    "pixi.js": "^8.17.1",
     "prettier": "^3.5.3",
     "prettier-plugin-organize-imports": "^4.1.0",
     "prettier-plugin-sh": "^0.17.4",