Update cheatsheets

cargo-update

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# cargo update
+
+> Update dependencies as recorded in `Cargo.lock`.
+> More information: <https://doc.rust-lang.org/cargo/commands/cargo-update.html>.
+
+- Update dependencies in `Cargo.lock` to the latest possible version:
+
+`cargo update`
+
+- Display what would be updated, but don't actually write the lockfile:
+
+`cargo update --dry-run`
+
+- Update only the specified dependencies:
+
+`cargo update --package {{dependency1}} --package {{dependency2}} --package {{dependency3}}`
+
+- Set a specific dependency to a specific version:
+
+`cargo update --package {{dependency}} --precise {{1.2.3}}`