poetry-update: add page

pages/common/poetry-update.md

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+# poetry update
+
+> Update dependencies to their latest compatible versions and update the lock file.
+> More information: <https://python-poetry.org/docs/cli/#update>.
+
+- Update all dependencies to their latest compatible versions:
+
+`poetry update`
+
+- Update a specific package to its latest compatible version:
+
+`poetry update {{package_name}}`
+
+- Update multiple specific packages:
+
+`poetry update {{package1}} {{package2}}`
+
+- Update all packages without updating the lock file:
+
+`poetry update --lock`
+
+- Update packages in dry-run mode (show what would be updated):
+
+`poetry update --dry-run`
+
+- Display help:
+
+`poetry update --help`