add changelog and fix tests for windows

Author: austinvalle

.changes/unreleased/FEATURES-20251103-153952.yaml

@@ -0,0 +1,5 @@
+kind: FEATURES
+body: 'action/local_command: New action that invokes an executable on the local machine.'
+time: 2025-11-03T15:39:52.741799-05:00
+custom:
+    Issue: "450"

internal/provider/action_local_command_test.go

@@ -248,7 +248,7 @@ action "local_command" "test" {
     command   = "notarealcommand"
   }
 }`,
-				ExpectError: regexp.MustCompile(`Error: exec: "notarealcommand": executable file not found in \$PATH`),
+				ExpectError: regexp.MustCompile(`Error: exec: "notarealcommand": executable file not found`),
 			},
 		},
 	})

internal/provider/testdata/TestLocalCommandAction_bash/scripts/example_script.sh

@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: MPL-2.0
 
 
-NAME=$(</dev/stdin)
+NAME=$(cat)
 echo "Hello $NAME!"
 
 echo "stdin: $NAME, args: $@" >> test_file.txt