fix: require python 3.7+ (#67)

* chore(python): drop python 3.6 Source-Link: googleapis/synthtool@4f89b13 Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:e7bb19d47c13839fe8c147e50e02e8b6cf5da8edd1af8b82208cd6f66cc2829c * require python 3.7+ in setup.py * remove python 3.6 sample configs * add api_description to .repo-metadata.json * exclude templated README Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com> Co-authored-by: Anthonios Partheniou <partheniou@google.com>

Author: gcf-owl-bot[bot]

.github/.OwlBot.lock.yaml

@@ -13,5 +13,5 @@
 # limitations under the License.
 docker:
  image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
- digest: sha256:81ed5ecdfc7cac5b699ba4537376f3563f6f04122c4ec9e735d3b3dc1d43dd32
-# created: 2022-05-05T22:08:23.383410683Z
+ digest: sha256:e7bb19d47c13839fe8c147e50e02e8b6cf5da8edd1af8b82208cd6f66cc2829c
+# created: 2022-07-05T18:31:20.838186805Z

.github/workflows/unittest.yml

@@ -8,7 +8,7 @@ jobs:
  runs-on: ubuntu-latest
  strategy:
  matrix:
- python: ['3.6', '3.7', '3.8', '3.9', '3.10']
+ python: ['3.7', '3.8', '3.9', '3.10']
  steps:
  - name: Checkout
  uses: actions/checkout@v3

.kokoro/continuous/prerelease-deps.cfg

@@ -0,0 +1,7 @@
+# Format: //devtools/kokoro/config/proto/build.proto
+
+# Only run this nox session.
+env_vars: {
+ key: "NOX_SESSION"
+ value: "prerelease_deps"
+}

.kokoro/presubmit/prerelease-deps.cfg

@@ -0,0 +1,7 @@
+# Format: //devtools/kokoro/config/proto/build.proto
+
+# Only run this nox session.
+env_vars: {
+ key: "NOX_SESSION"
+ value: "prerelease_deps"
+}

.kokoro/samples/python3.6/common.cfg

@@ -33,7 +33,7 @@ export PYTHONUNBUFFERED=1
 env | grep KOKORO
 
 # Install nox
-python3.6 -m pip install --upgrade --quiet nox
+python3.9 -m pip install --upgrade --quiet nox
 
 # Use secrets acessor service account to get secrets
 if [[ -f "${KOKORO_GFILE_DIR}/secrets_viewer_service_account.json" ]]; then
@@ -76,7 +76,7 @@ for file in samples/**/requirements.txt; do
  echo "------------------------------------------------------------"
 
  # Use nox to execute the tests for the project.
- python3.6 -m nox -s "$RUN_TESTS_SESSION"
+ python3.9 -m nox -s "$RUN_TESTS_SESSION"
  EXIT=$?
 
  # If this is a periodic build, send the test log to the FlakyBot.