fix: 📌 Pin "@types/dom-mediacapture-record" due to end of support of Typescript 4.8

Author: nedseb

pxt-steami/package.json

@@ -37,7 +37,7 @@
         "docs/static/icons/favicon.ico"
     ],
     "devDependencies": {
-        "@types/dom-mediacapture-record": "^1.0.16",
+        "@types/dom-mediacapture-record": "1.0.20",
         "@types/marked": "0.3.0",
         "@types/node": "8.10.66",
         "@types/react": "16.4.7",