[release-branch.go1.20] go1.20rc1

Change-Id: I26470f8bcd902f9e1c7877763e360cb3c6255f3a
Reviewed-on: https://go-review.googlesource.com/c/go/+/456096
Reviewed-by: Heschi Kreinick <heschi@google.com>
Run-TryBot: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
TryBot-Bypass: Michael Pratt <mpratt@google.com>
Auto-Submit: Gopher Robot <gobot@golang.org>
diff --git a/VERSION b/VERSION
new file mode 100644
index 0000000..867a89f
--- /dev/null
+++ b/VERSION
@@ -0,0 +1 @@
+go1.20rc1
\ No newline at end of file