[DEPS] Restore Firefox/JSC to 133.0 to avoid breaking wasm tests

Change-Id: I19f44c656023b6940cd8161ea5b367ec56fa9845
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/403947
Reviewed-by: Sigmund Cherem <[email protected]>
Auto-Submit: Mayank Patke <[email protected]>
Commit-Queue: Mayank Patke <[email protected]>

DEPS

@@ -72,7 +72,7 @@ vars = {
   # instructions. d8, the V8 shell, is always checked out.
   "checkout_javascript_engines": False,
   "d8_tag": "version:13.4.32",
-  "jsshell_tag": "version:134.0",
+  "jsshell_tag": "version:133.0",
   "jsc_tag": "version:288804",
 
   # https://chrome-infra-packages.appspot.com/p/fuchsia/third_party/clang
@@ -182,7 +182,7 @@ vars = {
   "download_chrome": False,
   "chrome_tag": "132.0.6834.83",
   "download_firefox": False,
-  "firefox_tag": "134.0",
+  "firefox_tag": "133.0.3",
 
   # Emscripten is used in dart2wasm tests.
   "download_emscripten": False,