Update link to slide deck viewable by the public (no google.com or even a Google account needed).

Context: https://github.com/bazelbuild/bazel/commit/52e5551e9a8d36959a1f49cfbe6c9420133b9743#commitcomment-144041287
PiperOrigin-RevId: 650710377
Change-Id: I01e8aa16b8064886d876c1dfddf63717f39f31f7
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/FileFunction.java b/src/main/java/com/google/devtools/build/lib/skyframe/FileFunction.java
index efed197..4d7d97d 100644
--- a/src/main/java/com/google/devtools/build/lib/skyframe/FileFunction.java
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/FileFunction.java
@@ -51,7 +51,7 @@
  *
  * <p>For an overview of the problem space and our approach, see the https://youtu.be/EoYdWmMcqDs
  * talk from BazelCon 2019 (slides:
- * https://docs.google.com/presentation/d/e/2PACX-1vTX6278AbRIElPP7Enn-u5vwOl9f-35JxEBTYWDDZEa6gD65fF1MFV4ld_pYL-_ZWGygEpLpJ9oe3bp/pub).
+ * https://docs.google.com/presentation/d/e/2PACX-1vQWq1DUhl92dDs_okNxM7Qy9zX72tp7hMsGosGxmjhBLZ5e02IJf9dySK_6lEU2j6u_NOEaUCQGxEFh/pub).
  */
 public class FileFunction implements SkyFunction {
   private final AtomicReference<PathPackageLocator> pkgLocator;