[CVAT] Fix oracles lint workflow (#2644)

* Install poetry via pipx in Dockerfile

- https://python-poetry.org/docs/#ci-recommendations
- https://github.com/pypa/pipx#on-linux

* Install poetry via snok/install-poetry@v1

* Revert "Install poetry via pipx in Dockerfile"

This reverts commit e2504dd.

Author: Bobronium

.github/workflows/ci-lint-cvat-exchange-oracle.yaml

@@ -19,11 +19,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - name: Install Poetry
+        uses: snok/install-poetry@v1
         with:
-          cache: 'pip'
-          cache-dependency-path: ${{ env.WORKING_DIR }}/poetry.lock
-      - run: python -m pip install poetry
+          version: 1.8.4
       - uses: actions/setup-python@v5
         with:
           python-version: '3.10'

.github/workflows/ci-lint-cvat-recording-oracle.yaml

@@ -19,11 +19,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - name: Install Poetry
+        uses: snok/install-poetry@v1
         with:
-          cache: 'pip'
-          cache-dependency-path: ${{ env.WORKING_DIR }}/poetry.lock
-      - run: python -m pip install poetry
+          version: 1.8.4
       - uses: actions/setup-python@v5
         with:
           python-version: '3.10'