tokio: make 1.20.x an LTS release (#4962)

Author: Darksonn

README.md

@@ -202,18 +202,18 @@ warrants a patch release with a fix for the bug, it will be backported and
 released as a new patch release for each LTS minor version. Our current LTS
 releases are:
 
- * `1.14.x` - LTS release until June 2022.
  * `1.18.x` - LTS release until January 2023
+ * `1.20.x` - LTS release until April 2023.
 
 Each LTS release will continue to receive backported fixes for at least half a
 year. If you wish to use a fixed minor release in your project, we recommend
 that you use an LTS release.
 
 To use a fixed minor version, you can specify the version with a tilde. For
-example, to specify that you wish to use the newest `1.14.x` patch release, you
+example, to specify that you wish to use the newest `1.18.x` patch release, you
 can use the following dependency specification:
 ```text
-tokio = { version = "~1.14", features = [...] }
+tokio = { version = "~1.18", features = [...] }
 ```
 
 ## License

tokio/README.md

@@ -202,18 +202,18 @@ warrants a patch release with a fix for the bug, it will be backported and
 released as a new patch release for each LTS minor version. Our current LTS
 releases are:
 
- * `1.14.x` - LTS release until June 2022.
  * `1.18.x` - LTS release until January 2023
+ * `1.20.x` - LTS release until April 2023.
 
 Each LTS release will continue to receive backported fixes for at least half a
 year. If you wish to use a fixed minor release in your project, we recommend
 that you use an LTS release.
 
 To use a fixed minor version, you can specify the version with a tilde. For
-example, to specify that you wish to use the newest `1.14.x` patch release, you
+example, to specify that you wish to use the newest `1.18.x` patch release, you
 can use the following dependency specification:
 ```text
-tokio = { version = "~1.14", features = [...] }
+tokio = { version = "~1.18", features = [...] }
 ```
 
 ## License