Java, runfiles: fix deprecation target release

Adjust the expected Bazel release version that I
expect will drop the deprecated
@bazel_tools//tools/runfiles:java-runfiles target.

The change which made this target deprecated will
first be released in 0.18.0, so we need at least
one more release before we can remove the target.

RELNOTES[NEW]: Java, runfiles: the Java runfiles library is now in @bazel_tools//tools/java/runfiles. The old target (@bazel_tools//tools/runfiles:java-runfiles) is deprecated and will be removed in Bazel 0.19.0 (not 0.18.0, as stated earlier).

PiperOrigin-RevId: 208203724
diff --git a/tools/runfiles/BUILD.tools b/tools/runfiles/BUILD.tools
index 04c8e6f..ec0f12a 100644
--- a/tools/runfiles/BUILD.tools
+++ b/tools/runfiles/BUILD.tools
@@ -2,5 +2,5 @@
     name = "java-runfiles",
     exports = ["//tools/java/runfiles"],
     visibility = ["//visibility:public"],
-    deprecation = "Depend on @bazel_tools//tools/java/runfiles instead. This target will be deleted in Bazel 0.18.0",
+    deprecation = "Depend on @bazel_tools//tools/java/runfiles instead. This target will be deleted in Bazel 0.19.0",
 )