Use the checkout_path for getting the commit oid

This commit also adds a new integration check to verify this.

When running in test mode, payloads will not be uploaded. Instead, they
will be saved to disk so that they can be inspected later.

Author: aeisenberg

.github/workflows/__with-checkout-path.yml

@@ -6,7 +6,8 @@ No user facing changes.
 
 ## 1.1.3 - 23 Feb 2022
 
-- Fix bug where the CLR traces can continue tracing even after tracing should be stopped. [#938](https://github.com/github/codeql-action/pull/938)
+- Fix a bug where the CLR traces can continue tracing even after tracing should be stopped. [#938](https://github.com/github/codeql-action/pull/938)
+- Fix a bug where an invalid `commit_oid` was being sent to code scanning when a custom checkout path was being used. [#956](https://github.com/github/codeql-action/pull/956)
 
 ## 1.1.2 - 17 Feb 2022