chore(python): update release script dependencies (googleapis#855)

Source-Link: googleapis/synthtool@25083af
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:e6cbd61f1838d9ff6a31436dfc13717f372a7482a82fc1863ca954ec47bff8c8

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

.github/.OwlBot.lock.yaml

@@ -13,4 +13,4 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
-  digest: sha256:7a40313731a7cb1454eef6b33d3446ebb121836738dc3ab3d2d3ded5268c35b6
+  digest: sha256:e6cbd61f1838d9ff6a31436dfc13717f372a7482a82fc1863ca954ec47bff8c8

.kokoro/docker/docs/Dockerfile

@@ -60,16 +60,16 @@ RUN apt-get update \
   && rm -rf /var/lib/apt/lists/* \
   && rm -f /var/cache/apt/archives/*.deb
 
-###################### Install python 3.8.11
+###################### Install python 3.9.13
 
-# Download python 3.8.11
-RUN wget https://www.python.org/ftp/python/3.8.11/Python-3.8.11.tgz
+# Download python 3.9.13
+RUN wget https://www.python.org/ftp/python/3.9.13/Python-3.9.13.tgz
 
 # Extract files
-RUN tar -xvf Python-3.8.11.tgz
+RUN tar -xvf Python-3.9.13.tgz
 
-# Install python 3.8.11
-RUN ./Python-3.8.11/configure --enable-optimizations
+# Install python 3.9.13
+RUN ./Python-3.9.13/configure --enable-optimizations
 RUN make altinstall
 
 ###################### Install pip

.kokoro/requirements.in

@@ -5,4 +5,6 @@ typing-extensions
 twine
 wheel
 setuptools
-nox
+nox
+charset-normalizer<3
+click<8.1.0