chore: upgrade rules_python and grpc (googleapis#1124)

* chore: upgrade rules_python and grpc

* Set minimum bazel version

* update integration test image to gcr.io/gapic-images/googleapis

* address review feedback

Author: parthea

.bazelversion

@@ -0,0 +1 @@
+4.0.0

.github/workflows/tests.yaml

@@ -326,7 +326,7 @@ jobs:
         run: nox -s fragment${{ matrix.variant }}-${{ matrix.python }}
   integration:
     runs-on: ubuntu-latest
-    container: gcr.io/gapic-images/googleapis-bazel:20210105
+    container: gcr.io/gapic-images/googleapis
     steps:
       - name: Cancel Previous Runs
         uses: styfle/cancel-workflow-action@0.7.0

WORKSPACE

@@ -2,15 +2,25 @@ workspace(name = "gapic_generator_python")
 
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
+_bazel_skylib_version = "0.9.0"
+
+_bazel_skylib_sha256 = "1dde365491125a3db70731e25658dfdd3bc5dbdfd11b840b3e987ecf043c7ca0"
+
 http_archive(
     name = "bazel_skylib",
-    urls = ["https://github.com/bazelbuild/bazel-skylib/releases/download/0.9.0/bazel_skylib-0.9.0.tar.gz"],
+    sha256 = _bazel_skylib_sha256,
+    url = "https://github.com/bazelbuild/bazel-skylib/releases/download/{0}/bazel_skylib-{0}.tar.gz".format(_bazel_skylib_version),
 )
 
+_rules_python_version = "0.5.0"
+
+_rules_python_sha256 = "a2fd4c2a8bcf897b718e5643040b03d9528ac6179f6990774b7c19b2dc6cd96b"
+
 http_archive(
     name = "rules_python",
-    strip_prefix = "rules_python-0.1.0",
-    url = "https://github.com/bazelbuild/rules_python/archive/0.1.0.tar.gz",
+    sha256 = _rules_python_sha256,
+    strip_prefix = "rules_python-{}".format(_rules_python_version),
+    url = "https://github.com/bazelbuild/rules_python/archive/{}.tar.gz".format(_rules_python_version),
 )
 
 #

repositories.bzl

@@ -15,13 +15,15 @@ def gapic_generator_python():
         requirements = "@gapic_generator_python//:requirements.txt",
     )
 
-    _protobuf_version = "3.15.8"
-    _protobuf_version_in_link = "v%s" % _protobuf_version
+    _protobuf_version = "3.19.2"
+    _protobuf_sha256 = "9ceef0daf7e8be16cd99ac759271eb08021b53b1c7b6edd399953a76390234cd"
+    _protobuf_version_in_link = "v{}".format(_protobuf_version)
     _maybe(
         http_archive,
         name = "com_google_protobuf",
-        urls = ["https://github.com/protocolbuffers/protobuf/archive/%s.zip" % _protobuf_version_in_link],
-        strip_prefix = "protobuf-%s" % _protobuf_version,
+        sha256 = _protobuf_sha256,
+        url = "https://github.com/protocolbuffers/protobuf/archive/refs/tags/{}.zip".format(_protobuf_version_in_link),
+        strip_prefix = "protobuf-{}".format(_protobuf_version),
     )
 
     _maybe(
@@ -31,11 +33,14 @@ def gapic_generator_python():
         urls = ["https://github.com/bazelbuild/bazel-skylib/archive/2169ae1c374aab4a09aa90e65efe1a3aad4e279b.tar.gz"],
     )
 
+    _grpc_version = "1.43.0"
+    _grpc_sha256 = "9647220c699cea4dafa92ec0917c25c7812be51a18143af047e20f3fb05adddc"
     _maybe(
         http_archive,
         name = "com_github_grpc_grpc",
-        strip_prefix = "grpc-1.36.4",
-        urls = ["https://github.com/grpc/grpc/archive/v1.36.4.zip"],
+        sha256 = _grpc_sha256,
+        strip_prefix = "grpc-{}".format(_grpc_version),
+        url = "https://github.com/grpc/grpc/archive/v{}.tar.gz".format(_grpc_version),
     )
 
     _maybe(