Add CI workflow for Emacs 29.1

Author: gmlarumbe

.github/workflows/build_package.yml

@@ -15,6 +15,7 @@ jobs:
       matrix:
         emacs_version:
           - 28.2
+          - 29.1
           - release-snapshot
           # - snapshot
     steps:

.github/workflows/build_straight.yml

@@ -15,6 +15,7 @@ jobs:
       matrix:
         emacs_version:
           - 28.2
+          - 29.1
           - release-snapshot
           - snapshot
     steps:

test/verilog-ext-tests-setup-straight.el

@@ -60,7 +60,6 @@
 ;; Overwrite with latest version instead of the one pointed by Package-Requires:
 (use-package verilog-mode
   :straight (:repo "veripool/verilog-mode")
-  ;; :straight nil ; TODO: Uncomment/replace when gnu archive has a newer version where tests pass
   :config
   (defvar verilog-ext-test-indent-level 4)
   (setq verilog-indent-level             verilog-ext-test-indent-level)