wip(ci): add env path to shell class

src/main/kotlin/com/liftric/octopusdeploy/shell.kt

@@ -7,13 +7,21 @@ internal fun shell(cmd: String, logger: Logger): ShellResult = File(".").shell(c
 
 internal fun File.shell(cmd: String, logger: Logger): ShellResult {
     val tmpDir = System.getProperty("java.io.tmpdir")
+    val env = System.getenv().toMutableMap()
+
+    // Ensure PATH includes GITHUB_PATH if it exists
+    env["GITHUB_PATH"]?.let { githubPath ->
+        env["PATH"] = "${env["PATH"]}:$githubPath"
+    }
+
     // DOTNET_BUNDLE_EXTRACT_BASE_DIR is a workaround for https://github.com/dotnet/runtime/issues/3846
     val cmdarray = arrayOf("sh", "-c", "DOTNET_BUNDLE_EXTRACT_BASE_DIR=$tmpDir $cmd")
     val cmdDir = this
     logger.debug("shell: cmdarray='${cmdarray.toList()}'")
     logger.debug("shell: cmdDir='$cmdDir'")
     logger.debug("shell: tmpDir='$tmpDir'")
-    val process = Runtime.getRuntime().exec(cmdarray, emptyArray(), cmdDir)
+    val envArray = env.map { (key, value) -> "$key=$value" }.toTypedArray()
+    val process = Runtime.getRuntime().exec(cmdarray, envArray, cmdDir)
     val exitCode = process.waitFor()
     val inputText = process.inputStream.bufferedReader().readText().trim()
     val errorText = process.errorStream.bufferedReader().readText().trim()