Update cheatsheets

tldr/uv-self

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# uv self
+
+> Manage the `uv` executable itself.
+> More information: <https://docs.astral.sh/uv/reference/cli/#uv-self>.
+
+- Update `uv` to the latest version:
+
+`uv self update`
+
+- Update `uv` to a specific version:
+
+`uv self update {{0.4.0}}`
+
+- Check for available `uv` updates without installing:
+
+`uv self update --dry-run`
+
+- Update `uv` with verbose output:
+
+`uv self update {{[-v|--verbose]}}`
+
+- Display the current `uv` version:
+
+`uv self version`
+
+- Display only the version number:
+
+`uv self version --short`
+
+- Display version information in JSON format:
+
+`uv self version --output-format json`