chore(backend): Downgrade poetry to 2.1.1 for dependabot (#10079)

Co-authored-by: Reinier van der Leer <pwuts@agpt.co>

.github/workflows/platform-backend-ci.yml

@@ -32,7 +32,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10"]
+        python-version: ["3.11"]
     runs-on: ubuntu-latest
 
     services:
@@ -81,12 +81,12 @@ jobs:
       - name: Install Poetry (Unix)
         run: |
           # Extract Poetry version from backend/poetry.lock
-          HEAD_POETRY_VERSION=$(head -n 1 poetry.lock | grep -oP '(?<=Poetry )[0-9]+\.[0-9]+\.[0-9]+')
+          HEAD_POETRY_VERSION=$(python ../../.github/workflows/scripts/get_package_version_from_lockfile.py poetry)
           echo "Found Poetry version ${HEAD_POETRY_VERSION} in backend/poetry.lock"
 
           if [ -n "$BASE_REF" ]; then
             BASE_BRANCH=${BASE_REF/refs\/heads\//}
-            BASE_POETRY_VERSION=$((git show "origin/$BASE_BRANCH":./poetry.lock; true) | head -n 1 | grep -oP '(?<=Poetry )[0-9]+\.[0-9]+\.[0-9]+')
+            BASE_POETRY_VERSION=$((git show "origin/$BASE_BRANCH":./poetry.lock; true) | python ../../.github/workflows/scripts/get_package_version_from_lockfile.py poetry -)
             echo "Found Poetry version ${BASE_POETRY_VERSION} in backend/poetry.lock on ${BASE_REF}"
             POETRY_VERSION=$(printf '%s\n' "$HEAD_POETRY_VERSION" "$BASE_POETRY_VERSION" | sort -V | tail -n1)
           else

.github/workflows/scripts/get_package_version_from_lockfile.py

@@ -0,0 +1,60 @@
+#!/usr/bin/env python3
+import sys
+
+if sys.version_info < (3, 11):
+    print("Python version 3.11 or higher required")
+    sys.exit(1)
+
+import tomllib
+
+
+def get_package_version(package_name: str, lockfile_path: str) -> str | None:
+    """Extract package version from poetry.lock file."""
+    try:
+        if lockfile_path == "-":
+            data = tomllib.load(sys.stdin.buffer)
+        else:
+            with open(lockfile_path, "rb") as f:
+                data = tomllib.load(f)
+    except FileNotFoundError:
+        print(f"Error: File '{lockfile_path}' not found", file=sys.stderr)
+        sys.exit(1)
+    except tomllib.TOMLDecodeError as e:
+        print(f"Error parsing TOML file: {e}", file=sys.stderr)
+        sys.exit(1)
+    except Exception as e:
+        print(f"Error reading file: {e}", file=sys.stderr)
+        sys.exit(1)
+
+    # Look for the package in the packages list
+    packages = data.get("package", [])
+    for package in packages:
+        if package.get("name", "").lower() == package_name.lower():
+            return package.get("version")
+
+    return None
+
+
+def main():
+    if len(sys.argv) not in (2, 3):
+        print(
+            "Usages: python get_package_version_from_lockfile.py <package name> [poetry.lock path]\n"
+            "        cat poetry.lock | python get_package_version_from_lockfile.py <package name> -",
+            file=sys.stderr,
+        )
+        sys.exit(1)
+
+    package_name = sys.argv[1]
+    lockfile_path = sys.argv[2] if len(sys.argv) == 3 else "poetry.lock"
+
+    version = get_package_version(package_name, lockfile_path)
+
+    if version:
+        print(version)
+    else:
+        print(f"Package '{package_name}' not found in {lockfile_path}", file=sys.stderr)
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()