Upgrade CI poetry version to 1.5.1. (#9479)

Poetry v1.5.1 was released on May 29, almost 3 months ago. Probably a
safe upgrade.

.github/workflows/_lint.yml

@@ -9,7 +9,7 @@ on:
         description: "From which folder this pipeline executes"
 
 env:
-  POETRY_VERSION: "1.4.2"
+  POETRY_VERSION: "1.5.1"
   WORKDIR: ${{ inputs.working-directory == '' && '.' || inputs.working-directory }}
 
 jobs:
@@ -91,7 +91,7 @@ jobs:
           key: pip-editable-langchain-deps-${{ runner.os }}-${{ runner.arch }}-py-${{ matrix.python-version }}
       - name: Install poetry
         run: |
-          pipx install poetry==$POETRY_VERSION
+          pipx install "poetry==$POETRY_VERSION"
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         env:

.github/workflows/_release.yml

@@ -9,7 +9,7 @@ on:
         description: "From which folder this pipeline executes"
 
 env:
-  POETRY_VERSION: "1.4.2"
+  POETRY_VERSION: "1.5.1"
 
 jobs:
   if_release:
@@ -23,7 +23,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - name: Install poetry
-        run: pipx install poetry==$POETRY_VERSION
+        run: pipx install "poetry==$POETRY_VERSION"
       - name: Set up Python 3.10
         uses: actions/setup-python@v4
         with:

.github/workflows/_test.yml

@@ -13,7 +13,7 @@ on:
         default: '["core", "extended", "core-pydantic-2"]'
 
 env:
-  POETRY_VERSION: "1.4.2"
+  POETRY_VERSION: "1.5.1"
 
 jobs:
   build:
@@ -37,7 +37,7 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
           working-directory: ${{ inputs.working-directory }}
-          poetry-version: "1.4.2"
+          poetry-version: ${{ env.POETRY_VERSION }}
           cache-key: ${{ matrix.test_type }}
           install-command: |
               if [ "${{ matrix.test_type }}" == "core" ]; then

.github/workflows/scheduled_test.yml

@@ -6,7 +6,7 @@ on:
     - cron:  '0 13 * * *'
 
 env:
-  POETRY_VERSION: "1.4.2"
+  POETRY_VERSION: "1.5.1"
 
 jobs:
   build:
@@ -29,7 +29,7 @@ jobs:
         uses: "./.github/actions/poetry_setup"
         with:
           python-version: ${{ matrix.python-version }}
-          poetry-version: "1.4.2"
+          poetry-version: ${{ env.POETRY_VERSION }}
           working-directory: libs/langchain
           install-command: |
             echo "Running scheduled tests, installing dependencies with poetry..."