Update Quiche to RE2 release `2023-06-01`.

Note that RE2 has taken a dependency on Abseil, so the `main` branch
should be used from now on. The `abseil` branch will go away soon...

PiperOrigin-RevId: 536747653

WORKSPACE.bazel

diff --git a/WORKSPACE.bazel b/WORKSPACE.bazel
index 62e2c6f..823c6e3 100644
--- a/WORKSPACE.bazel
+++ b/WORKSPACE.bazel
@@ -67,13 +67,11 @@
     urls = ["https://github.com/google/googletest/archive/12a5852e451baabc79c63a86c634912c563d57bc.zip"],
 )
 
-# Note this must use a commit from the `abseil` branch of the RE2 project.
-# https://github.com/google/re2/tree/abseil
 http_archive(
     name = "com_googlesource_code_re2",
-    sha256 = "906d0df8ff48f8d3a00a808827f009a840190f404559f649cb8e4d7143255ef9",  # Last updated 2022-04-08
-    strip_prefix = "re2-a276a8c738735a0fe45a6ee590fe2df69bcf4502",
-    urls = ["https://github.com/google/re2/archive/a276a8c738735a0fe45a6ee590fe2df69bcf4502.zip"],
+    sha256 = "1726508efc93a50854c92e3f7ac66eb28f0e57652e413f11d7c1e28f97d997ba",  # Last updated 2023-06-01
+    strip_prefix = "re2-03da4fc0857c285e3a26782f6bc8931c4c950df4",
+    urls = ["https://github.com/google/re2/archive/03da4fc0857c285e3a26782f6bc8931c4c950df4.zip"],
 )
 
 # -------- Load and call dependencies of underlying libraries --------