Update changelog for 1.73

CHANGELOG.md

@@ -1,5 +1,45 @@
 # Changelog
 
+## Cargo 1.73 (2023-10-05)
+[45782b6b...HEAD](https://github.com/rust-lang/cargo/compare/45782b6b...HEAD)
+
+### Added
+
+### Changed
+
+### Fixed
+
+### Nightly only
+
+- Fixed invalid package names generated by `-Zscript`.
+  [#12349](https://github.com/rust-lang/cargo/pull/12349)
+- `-Zscript` now errors out on unsupported commands — `publish` and `package`.
+  [#12350](https://github.com/rust-lang/cargo/pull/12350)
+
+### Documentation
+
+- Use heading attributes to control the fragment.
+  [#12339](https://github.com/rust-lang/cargo/pull/12339)
+- Use "number" instead of "digit" when explaining Cargo's use of semver.
+  [#12340](https://github.com/rust-lang/cargo/pull/12340)
+- contrib: Add some more detail about how publishing works.
+  [#12344](https://github.com/rust-lang/cargo/pull/12344)
+- Clarify "Package ID" and "Source ID" in `cargo metadata` are opaque strings.
+  [#12313](https://github.com/rust-lang/cargo/pull/12313)
+- Added `profile.strip` to configuration docs.
+  [#12337](https://github.com/rust-lang/cargo/pull/12337)
+- Multiple versions that differ only in the metadata tag are disallowed on crates.io.
+  [#12335](https://github.com/rust-lang/cargo/pull/12335)
+
+### Internal
+
+- Updated to `criterion` 0.5.1.
+  [#12338](https://github.com/rust-lang/cargo/pull/12338)
+- ci: automatically test new packages by using `--workspace`.
+  [#12342](https://github.com/rust-lang/cargo/pull/12342)
+- ci: automatically update dependencies monthly with Renovate.
+  [#12341](https://github.com/rust-lang/cargo/pull/12341)
+
 ## Cargo 1.72 (2023-08-24)
 [64fb38c9...rust-1.72.0](https://github.com/rust-lang/cargo/compare/64fb38c9...rust-1.72.0)