Update the release procedure to check if a new release is required

We release a new version of pie and its chart every month, but if there
aren't any significant changes, we might skip that month's release.

Signed-off-by: Toshikuni Fukaya <[email protected]>

Author: toshipp

RELEASE.md

@@ -39,14 +39,14 @@ The result should look something like:
 Bump version
 ------------
 
-1. Go to [the rule setting page](https://github.com/topolvm/pie/settings/rules/1550843) and change the value of "Enforcement status" to `Active`.
-
-2. Determine a new version number by [checking the differences](https://github.com/topolvm/pie/compare/vX.Y.Z...main) since the last release. Then, define the `VERSION` variable.
+1. Check if a new release is required by [checking the differences](https://github.com/topolvm/pie/compare/vX.Y.Z...main) since the last release. If so, determine a new version number and define the `VERSION` variable.
 
     ```console
     VERSION=1.2.3
     ```
 
+2. Go to [the rule setting page](https://github.com/topolvm/pie/settings/rules/1550843) and change the value of "Enforcement status" to `Active`.
+
 3. Add a new tag and push it.
 
     ```console