Release 4.0.20 (#1629)

With emscripten-releases revisions:

https://chromium.googlesource.com/emscripten-releases/+/c387d7a7e9537d0041d2c3ae71b7538cc978104e
(LTO)

https://chromium.googlesource.com/emscripten-releases/+/d4fdf09ba6e7a2d75bc1f643370caf4519021e89
(asserts)

bazel/MODULE.bazel

diff --git a/bazel/MODULE.bazel b/bazel/MODULE.bazel
index bf44281..550c927 100644
--- a/bazel/MODULE.bazel
+++ b/bazel/MODULE.bazel
@@ -1,6 +1,6 @@
 module(
     name = "emsdk",
-    version = "4.0.19",
+    version = "4.0.20",
 )
 
 bazel_dep(name = "platforms", version = "0.0.11")

bazel/revisions.bzl

diff --git a/bazel/revisions.bzl b/bazel/revisions.bzl
index 36a9b4c..a39855a 100644
--- a/bazel/revisions.bzl
+++ b/bazel/revisions.bzl
@@ -2,6 +2,14 @@
 # DO NOT MODIFY
 
 EMSCRIPTEN_TAGS = {
+    "4.0.20": struct(
+        hash = "c387d7a7e9537d0041d2c3ae71b7538cc978104e",
+        sha_linux = "a06e7ddda0c168f7ad52e6e0509c98db3545dcb254d3b9052e9e6b8423eaee7d",
+        sha_linux_arm64 = "a42862782c1d23330d2f55936e451f54ed4a630f9d7430ffd1936dc6967a29d1",
+        sha_mac = "6c4e8445a8e47e55fcd99789ec023d614c8dbd916afe64e9feb7a292c5070cd2",
+        sha_mac_arm64 = "144433e905ec1db726df9128e99624b9b4a3716e96dfb37dde22e2294a675c07",
+        sha_win = "388e9fab2bc9f94e85b1541e6ae0f1d9a5b9dfa9d756d89a0a3fc7acc052fbd5",
+    ),
     "4.0.19": struct(
         hash = "8b01e2ec3f33e6b94842096d7312ce4ef5f33f6c",
         sha_linux = "f83aa5ee648a4591ddbfcbd19a3040056c9c5a846adb2b9c342b37f2dd557f82",

emscripten-releases-tags.json

diff --git a/emscripten-releases-tags.json b/emscripten-releases-tags.json
index a8dd33c..c697cb5 100644
--- a/emscripten-releases-tags.json
+++ b/emscripten-releases-tags.json
@@ -1,6 +1,6 @@
 {
   "aliases": {
-    "latest": "4.0.19",
+    "latest": "4.0.20",
     "latest-sdk": "latest",
     "latest-arm64-linux": "latest",
     "latest-64bit": "latest",
@@ -10,6 +10,8 @@
     "latest-releases-upstream": "latest"
   },
   "releases": {
+    "4.0.20": "c387d7a7e9537d0041d2c3ae71b7538cc978104e",
+    "4.0.20-asserts": "d4fdf09ba6e7a2d75bc1f643370caf4519021e89",
     "4.0.19": "8b01e2ec3f33e6b94842096d7312ce4ef5f33f6c",
     "4.0.19-asserts": "b67b4278dffc6c3afb07341d70f128ae77ae0415",
     "4.0.18": "df7d4d811503e86e7728326e3eabbc383cb8042d",