[repo] Bump to React 19

Docusaurus 4.x will require React 19. We may as well upgrade now that
Docusuarus 3.7 has support.

Author: andrewnicols

package.json

@@ -55,9 +55,9 @@
     "micromark-extension-mdxjs-esm": "^3.0.0",
     "prism-react-renderer": "2",
     "raw-loader": "^4.0.2",
-    "react": "18",
-    "react-dom": "18",
-    "react-player": "^2.11.0",
+    "react": "19",
+    "react-dom": "19",
+    "react-player": "^2.16.0",
     "unist-util-find": "^3.0.0",
     "unist-util-visit": "^5.0.0"
   },

yarn.lock

@@ -11982,9 +11982,9 @@ __metadata:
     nodemw: "npm:^0.18.0"
     prism-react-renderer: "npm:2"
     raw-loader: "npm:^4.0.2"
-    react: "npm:18"
-    react-dom: "npm:18"
-    react-player: "npm:^2.11.0"
+    react: "npm:19"
+    react-dom: "npm:19"
+    react-player: "npm:^2.16.0"
     stylelint: "npm:^15.10.1"
     stylelint-config-standard: "npm:^29.0.0"
     ts-jest: "npm:^29.0.3"
@@ -17096,7 +17096,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"loose-envify@npm:^1.0.0, loose-envify@npm:^1.1.0, loose-envify@npm:^1.2.0, loose-envify@npm:^1.3.1, loose-envify@npm:^1.4.0":
+"loose-envify@npm:^1.0.0, loose-envify@npm:^1.2.0, loose-envify@npm:^1.3.1, loose-envify@npm:^1.4.0":
   version: 1.4.0
   resolution: "loose-envify@npm:1.4.0"
   dependencies:
@@ -20807,15 +20807,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"react-dom@npm:18":
-  version: 18.2.0
-  resolution: "react-dom@npm:18.2.0"
+"react-dom@npm:19":
+  version: 19.0.0
+  resolution: "react-dom@npm:19.0.0"
   dependencies:
-    loose-envify: "npm:^1.1.0"
-    scheduler: "npm:^0.23.0"
+    scheduler: "npm:^0.25.0"
   peerDependencies:
-    react: ^18.2.0
-  checksum: 10/ca5e7762ec8c17a472a3605b6f111895c9f87ac7d43a610ab7024f68cd833d08eda0625ce02ec7178cc1f3c957cf0b9273cdc17aa2cd02da87544331c43b1d21
+    react: ^19.0.0
+  checksum: 10/aa64a2f1991042f516260e8b0eca0ae777b6c8f1aa2b5ae096e80bbb6ac9b005aef2bca697969841d34f7e1819556263476bdfea36c35092e8d9aefde3de2d9a
   languageName: node
   linkType: hard
 
@@ -20895,9 +20894,9 @@ __metadata:
   languageName: node
   linkType: hard
 
-"react-player@npm:^2.11.0":
-  version: 2.11.0
-  resolution: "react-player@npm:2.11.0"
+"react-player@npm:^2.16.0":
+  version: 2.16.0
+  resolution: "react-player@npm:2.16.0"
   dependencies:
     deepmerge: "npm:^4.0.0"
     load-script: "npm:^1.0.0"
@@ -20906,7 +20905,7 @@ __metadata:
     react-fast-compare: "npm:^3.0.1"
   peerDependencies:
     react: ">=16.6.0"
-  checksum: 10/cb808521a361f97d3a93ea74a9543b8d655a87fdfbb44fd7026a8d7f3f37e1366e303766f61903c554064500f3af1ed794b9fcbf0205066ad100dfc94542fae2
+  checksum: 10/d7e2824f9cb52afc71e5661e341360153087fc4fe231ee4b6c0b968fcae1efecc208416cd69bfa24a024265fdca65aee3f74a290a86ccf1e5c0452102b82cb0d
   languageName: node
   linkType: hard
 
@@ -20973,12 +20972,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"react@npm:18":
-  version: 18.2.0
-  resolution: "react@npm:18.2.0"
-  dependencies:
-    loose-envify: "npm:^1.1.0"
-  checksum: 10/b9214a9bd79e99d08de55f8bef2b7fc8c39630be97c4e29d7be173d14a9a10670b5325e94485f74cd8bff4966ef3c78ee53c79a7b0b9b70cba20aa8973acc694
+"react@npm:19":
+  version: 19.0.0
+  resolution: "react@npm:19.0.0"
+  checksum: 10/2490969c503f644703c88990d20e4011fa6119ddeca451e9de48f6d7ab058d670d2852a5fcd3aa3cd90a923ab2815d532637bd4a814add402ae5c0d4f129ee71
   languageName: node
   linkType: hard
 
@@ -21891,12 +21888,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"scheduler@npm:^0.23.0":
-  version: 0.23.0
-  resolution: "scheduler@npm:0.23.0"
-  dependencies:
-    loose-envify: "npm:^1.1.0"
-  checksum: 10/0c4557aa37bafca44ff21dc0ea7c92e2dbcb298bc62eae92b29a39b029134f02fb23917d6ebc8b1fa536b4184934314c20d8864d156a9f6357f3398aaf7bfda8
+"scheduler@npm:^0.25.0":
+  version: 0.25.0
+  resolution: "scheduler@npm:0.25.0"
+  checksum: 10/e661e38503ab29a153429a99203fefa764f28b35c079719eb5efdd2c1c1086522f6653d8ffce388209682c23891a6d1d32fa6badf53c35fb5b9cd0c55ace42de
   languageName: node
   linkType: hard