Update PDF.js to 5.5.207

Fixes https://github.com/johnfactotum/foliate-js/issues/85

vendor/pdfjs/text_layer_builder.css

@@ -14,6 +14,8 @@
  */
 
 .textLayer {
+  color-scheme: only light;
+
   position: absolute;
   text-align: initial;
   inset: 0;
@@ -38,19 +40,30 @@
     transform-origin: 0% 0%;
   }
 
+  /* We multiply the font size by --min-font-size, and then scale the text
+   * elements by 1/--min-font-size. This allows us to effectively ignore the
+   * minimum font size enforced by the browser, so that the text layer <span>s
+   * can always match the size of the text in the canvas. */
+  --min-font-size: 1;
+  --text-scale-factor: calc(var(--total-scale-factor) * var(--min-font-size));
+  --min-font-size-inv: calc(1 / var(--min-font-size));
+
   > :not(.markedContent),
   .markedContent span:not(.markedContent) {
     z-index: 1;
+
+    --font-height: 0; /* set by text_layer.js */
+    font-size: calc(var(--text-scale-factor) * var(--font-height));
+
+    --scale-x: 1;
+    --rotate: 0deg;
+    transform: rotate(var(--rotate)) scaleX(var(--scale-x))
+      scale(var(--min-font-size-inv));
   }
 
-  /* Only necessary in Google Chrome, see issue 14205, and most unfortunately
-   * the problem doesn't show up in "text" reference tests. */
-  /*#if !MOZCENTRAL*/
-  span.markedContent {
-    top: 0;
-    height: 0;
+  .markedContent {
+    display: contents;
   }
-  /*#endif*/
 
   span[role="img"] {
     user-select: none;