fix(ci): move from pip-tools to poetry on layers

Author: heitorlessa

.github/workflows/publish_layer.yml

@@ -28,6 +28,8 @@ jobs:
         uses: actions/checkout@v3
         with:
           fetch-depth: 0
+      - name: Install poetry
+        run: pipx install poetry
       - name: Setup Node.js
         uses: actions/setup-node@v3
         with:
@@ -36,7 +38,7 @@ jobs:
         uses: actions/setup-python@v4
         with:
           python-version: "3.9"
-          cache: "pip"
+          cache: "poetry"
       - name: Set release notes tag
         run: |
           RELEASE_INPUT=${{ inputs.latest_published_version }}
@@ -48,8 +50,7 @@ jobs:
           npm install -g aws-cdk@2.29.0
           cdk --version
       - name: install deps
-        run: |
-          pip install -r requirements.txt
+        run: poetry install
       - name: CDK build
         run: cdk synth --context version=$RELEASE_TAG_VERSION -o cdk.out
       - name: zip output