chore(deps): update actions/setup-python action to v3 (#8)

Source-Link: googleapis/synthtool@571ee2c
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:660abdf857d3ab9aabcd967c163c70e657fcc5653595c709263af5f3fa23ef67

Author: gcf-owl-bot[bot]

packages/google-cloud-video-live-stream/.github/.OwlBot.lock.yaml

@@ -4,14 +4,13 @@
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-# http://www.apache.org/licenses/LICENSE-2.0
+#      http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
-  digest: sha256:d22cd2ddce65fdac6986f115563faf2fc81482b09dfbea83ac2808c92ecfdff0
+  digest: sha256:660abdf857d3ab9aabcd967c163c70e657fcc5653595c709263af5f3fa23ef67

packages/google-cloud-video-live-stream/.github/workflows/docs.yml

@@ -10,7 +10,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v2
     - name: Setup Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: "3.10"
     - name: Install nox
@@ -26,7 +26,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v2
     - name: Setup Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: "3.10"
     - name: Install nox

packages/google-cloud-video-live-stream/.github/workflows/lint.yml

@@ -10,7 +10,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v2
     - name: Setup Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: "3.10"
     - name: Install nox

packages/google-cloud-video-live-stream/.github/workflows/unittest.yml

@@ -13,7 +13,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v2
     - name: Setup Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: ${{ matrix.python }}
     - name: Install nox
@@ -39,7 +39,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v2
     - name: Setup Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: "3.10"
     - name: Install coverage