fix: use pkg_tar from rules_pkg (#1303)

Author: parthea

WORKSPACE

@@ -120,3 +120,16 @@ http_archive(
         "https://github.com/googleapis/gapic-showcase/archive/%s.zip" % _showcase_commit,
     ],
 )
+
+http_archive(
+    name = "rules_pkg",
+    sha256 = "8a298e832762eda1830597d64fe7db58178aa84cd5926d76d5b744d6558941c2",
+    urls = [
+        "https://mirror.bazel.build/github.com/bazelbuild/rules_pkg/releases/download/0.7.0/rules_pkg-0.7.0.tar.gz",
+        "https://github.com/bazelbuild/rules_pkg/releases/download/0.7.0/rules_pkg-0.7.0.tar.gz",
+    ],
+)
+
+load("@rules_pkg//:deps.bzl", "rules_pkg_dependencies")
+
+rules_pkg_dependencies()

rules_java_gapic/BUILD.bazel

@@ -1,4 +1,4 @@
-load("@bazel_tools//tools/build_defs/pkg:pkg.bzl", "pkg_tar")
+load("@rules_pkg//pkg:pkg.bzl", "pkg_tar")
 
 package(default_visibility = ["//visibility:public"])