Add lookup-only option (#1041)

* Add new actions/cache version (with dryRun support)

* Add dry-run option

* Changes after rebase

* Update readme

* Rename option to lookup-only

* Update test name

* Update package.json + changelog

* Update README

* Update custom package version

* Update custom package version

* Update @actions/cache to 3.2.0

* Code review

* Update log statement

* Move test case

---------

Co-authored-by: Sankalp Kotewar <98868223+kotewar@users.noreply.github.com>

RELEASES.md

@@ -76,3 +76,6 @@
 
 ### 3.2.6
 - Fix zstd not being used after zstd version upgrade to 1.5.4 on hosted runners.
+
+### 3.3.0
+- Added option to lookup cache without downloading it.