Update to Poetry 2.0

Author: SquidDev

.github/workflows/check.yml

@@ -18,7 +18,7 @@ jobs:
     - name: Install dependencies
       run: |
         pipx install poetry
-        poetry install
+        poetry sync
 
     - name: Typecheck code
       run: poetry run mypy dns

.github/workflows/update-dns.yml

@@ -21,7 +21,7 @@ jobs:
     - name: Install dependencies
       run: |
         pipx install poetry
-        poetry install
+        poetry sync --without=dev
 
     - name: Update DNS
       run: poetry run python -m dns.sync