Roll shaders-base from debc2d5dd36c to efb13717ecae

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/shaders-base-skia
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is aware of the problem.

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Tbr: kjlubick@google.com
Change-Id: I04e0324f70dfffa401fd390651e195b3adf1fb3b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/786918
Bot-Commit: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/WORKSPACE.bazel b/WORKSPACE.bazel
index 6b7366b..ced3ab2 100644
--- a/WORKSPACE.bazel
+++ b/WORKSPACE.bazel
@@ -589,7 +589,7 @@
 # Pulls the gcr.io/skia-public/shaders-base container.
 container_pull(
     name = "shaders-base",
-    digest = "sha256:debc2d5dd36ca7163a23765a3c6d1df04a0a4806e097037f0c0fd8bf12358cf7",
+    digest = "sha256:efb13717ecae6bec0e8339f1c5cd6403fc89d0a7d9232b1ca12be7f0374fd305",
     registry = "gcr.io",
     repository = "skia-public/shaders-base",
 )