Auto merge of #15753 - UK992:tidy, r=jdm

Fix Cargo.toml in servo_tidy_tests

- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix #15737

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python/tidy/servo_tidy_tests/Cargo.toml

@@ -1,5 +1,8 @@
 [package]
 name = "test"
-version = "*"
+version = "0.0.1"
 authors = ["The Servo Project Developers"]
 publish = false
+
+[dependencies]
+test-package = { version = "*" }