chore(deps): bump katex direct dep to ^0.16.47

Bumps the direct dependency katex from ^0.16.0 (lock: 0.16.45) to
^0.16.47.

Consumer: single renderer import at browser/lib/markdown.js:10 —
`import katex from 'katex'` — used for math equation rendering in note
preview. Renderer-bundled production dep, sink reachable for any
future katex advisories.

Bump is patch-within-minor (0.16.45 → 0.16.47) on the 0.16.x line. API
(`katex.renderToString()`, `katex.render()`) is stable across the
patch line — no deprecations between releases.

Direct-dep bump rather than a resolutions entry (resolutions are
reserved for forcing transitive deps; direct deps are upgraded in the
dependencies block).

Cliff: main: dist/katex.js (CJS), exports field has
require: ./dist/katex.js for webpack-1-compatible bundlers, no
type: module at root. Clean.

Verified inside bn-deps image:
  yarn install --ignore-engines --force
  → lock entry: ^0.16.47 → 0.16.47
  npm run compile
  → 9.22 MB / 1217 modules (+0.01 MB from 9.21 MB, expected for
    katex's added symbol tables; bundle hash changed as expected)

Author: Evaggelos Balaskas

package.json

@@ -75,7 +75,7 @@
     "invert-color": "^2.0.0",
     "js-yaml": "^3.14.1",
     "jsonlint-mod": "^1.7.4",
-    "katex": "^0.16.0",
+    "katex": "^0.16.47",
     "lodash": "^4.17.21",
     "lodash-move": "^1.1.1",
     "markdown-it": "^12.3.2",

yarn.lock

@@ -6351,10 +6351,10 @@ junk@^3.1.0:
   resolved "https://registry.yarnpkg.com/junk/-/junk-3.1.0.tgz#31499098d902b7e98c5d9b9c80f43457a88abfa1"
   integrity sha512-pBxcB3LFc8QVgdggvZWyeys+hnrNWg4OcZIU/1X59k5jQdLBlCsYGRQaz234SqoRLTCgMH00fY0xRJH+F9METQ==
 
-katex@^0.16.0:
-  version "0.16.45"
-  resolved "https://registry.yarnpkg.com/katex/-/katex-0.16.45.tgz#ba60d39c54746b6b8d39ce0e7f6eace07143149c"
-  integrity sha512-pQpZbdBu7wCTmQUh7ufPmLr0pFoObnGUoL/yhtwJDgmmQpbkg/0HSVti25Fu4rmd1oCR6NGWe9vqTWuWv3GcNA==
+katex@^0.16.47:
+  version "0.16.47"
+  resolved "https://registry.yarnpkg.com/katex/-/katex-0.16.47.tgz#0a13a42c2deb4f74e61f162d440b9165a548030f"
+  integrity sha512-Eeo8Ys1doU1z+x8AZsPpQu+p/QcZBI5PeOo7QGQdy2x2m0MU/hYagBbGOmXwr5KVbEfVuWv9LpnQWeehogurjg==
   dependencies:
     commander "^8.3.0"