update release instructions (#2687)

RELEASE.md

@@ -1,4 +1,4 @@
-# Release a new Tantivy Version
+# Releasing a new Tantivy Version
 
 ## Steps
 
@@ -10,12 +10,29 @@
 6. Set git tag with new version
 
 
-In conjucation with `cargo-release` Steps 1-4 (I'm not sure if the change detection works):
-Set new packages to version 0.0.0
+[`cargo-release`](https://github.com/crate-ci/cargo-release) will help us with steps 1-5:
 
 Replace prev-tag-name
 ```bash
-cargo release --workspace --no-publish -v --prev-tag-name 0.19 --push-remote origin minor --no-tag --execute
+cargo release --workspace --no-publish -v --prev-tag-name 0.24 --push-remote origin minor --no-tag
 ```
 
-no-tag or it will create tags for all the subpackages
+`no-tag` or it will create tags for all the subpackages
+
+cargo release will _not_ ignore unchanged packages, but it will print warnings for them.
+e.g. "warning: updating ownedbytes to 0.10.0 despite no changes made since tag 0.24"
+
+We need to manually ignore these unchanged packages
+```bash
+cargo release --workspace --no-publish -v --prev-tag-name 0.24 --push-remote origin minor --no-tag --exclude tokenizer-api
+```
+
+Add `--execute` to actually publish the packages, otherwise it will only print the commands that would be run.
+
+### Tag Version
+```bash
+git tag 0.25.0
+git push upstream tag 0.25.0
+```
+
+