feat: add OIDC workload identity federation tests

Add end-to-end tests for workload identity federation.

Depends on https://code.forgejo.org/forgejo/runner/pulls/1232
Depends on https://codeberg.org/forgejo/forgejo/pulls/10481

Signed-off-by: Mario Minardi <mminardi@shaw.ca>

actions/actions.sh

@@ -184,5 +184,9 @@ function test_actions() {
         if dpkg --compare-versions $version ge 15.0; then
             run actions_verify_example workflow-call-expansion
         fi
+
+        if dpkg --compare-versions $version ge 15.0; then
+            run actions_verify_example id-tokens
+        fi
     done
 }