Update posixtestsuite submodule (emscripten-core#13013)

sbc100 · web-flow · commit 6069e85bca2e · 2020-12-11T13:24:29.000-08:00
This repo is now part of the emscripten org.
diff --git a/.gitmodules b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "tests/third_party/posixtestsuite"]
 	path = tests/third_party/posixtestsuite
-	url = https://github.com/juj/posixtestsuite
+	url = https://github.com/emscripten-core/posixtestsuite
diff --git a/tests/third_party/posixtestsuite b/tests/third_party/posixtestsuite
@@ -1 +1 @@
-Subproject commit 26372421f53aeeeeeb4b23561c417886f1930ef6
+Subproject commit d8b4410774511596d95f6057abc4c88b1dc63c05
