Bug 1637919 [wpt PR 23592] - [compression] move pako into a third_party directory, a=testonly

Automatic update from web-platform-tests
[compression] move pako into a third_party directory (#23592)

This is following the directory structure used for webrtc in
https://github.com/web-platform-tests/rfcs/issues/46.

Spotted via https://github.com/web-platform-tests/wpt/pull/21855.
--

wpt-commits: 66e875b5d6bbd71ab24af9ca27d341f242f7a7cb
wpt-pr: 23592

testing/web-platform/tests/compression/compression-including-empty-chunk.tentative.any.js

@@ -1,5 +1,5 @@
 // META: global=window,worker
-// META: script=pako/pako_inflate.min.js
+// META: script=third_party/pako/pako_inflate.min.js
 // META: timeout=long
 
 'use strict';

testing/web-platform/tests/compression/compression-multiple-chunks.tentative.any.js

@@ -1,5 +1,5 @@
 // META: global=window,worker
-// META: script=pako/pako_inflate.min.js
+// META: script=third_party/pako/pako_inflate.min.js
 // META: timeout=long
 
 'use strict';

testing/web-platform/tests/compression/compression-stream.tentative.any.js

@@ -1,5 +1,5 @@
 // META: global=window,worker
-// META: script=pako/pako_inflate.min.js
+// META: script=third_party/pako/pako_inflate.min.js
 // META: timeout=long
 
 'use strict';