Update filters to avoid proto files in distribution

Change-Id: Ieb95ae519a793657e0d32336a506bb6eabb233b8
diff --git a/d8_r8/main/build.gradle.kts b/d8_r8/main/build.gradle.kts
index ed1c2c7..c6e6cd7 100644
--- a/d8_r8/main/build.gradle.kts
+++ b/d8_r8/main/build.gradle.kts
@@ -224,7 +224,7 @@
     }
     exclude("META-INF/*.kotlin_module")
     exclude("**/*.kotlin_metadata")
-    exclude("keepanno.proto")
+    exclude("keepspec.proto")
     destinationDirectory.set(getRoot().resolveAll("build", "libs"))
     archiveFileName.set("r8-full-exclude-deps.jar")
   }
@@ -269,6 +269,7 @@
     exclude("README.md")
     exclude("javax/annotation/**")
     exclude("wireless/**")
+    exclude("google/protobuf/**")
     duplicatesStrategy = DuplicatesStrategy.EXCLUDE
     archiveFileName.set("deps.jar")
   }