Update the release procedure docs/tools

Author: dkhalanskyjb

RELEASE.md

@@ -19,6 +19,7 @@ To release a new `<version>` of `kotlinx-coroutines`:
      * [`coroutines-guide-ui.md`](ui/coroutines-guide-ui.md)
    * Properties
      * [`gradle.properties`](gradle.properties)
+     * [`integration-testing/gradle.properties`](integration-testing/gradle.properties)
    * Make sure to **exclude** `CHANGES.md` from replacements.
 
    As an alternative approach, you can use `./bump-version.sh new_version`

bump-version.sh

@@ -80,7 +80,8 @@ done)
 set +e
 version_mentions=$(
     find . -type f \( -iname '*.properties' -o -iname '*.md' \) \
-    -not -iname CHANGES.md \
+    -not -iname CHANGES.md -not -iname CHANGES_UP_TO_1.7.md \
+    -not -path ./integration/kotlinx-coroutines-jdk8/README.md \
     -exec git grep --fixed-strings --word "$old_version" {} +
     )
 set -e