change submodule path from ssh to https to support github actions

.github/workflows/dnn_single_core.yml

@@ -1,12 +1,13 @@
 on:
   issue_comment:
     branches:
-      - master
+      - main
 
   push:
     paths:
       - 'rtl/*.v'
       - 'rtl/tb/*.py'
+      - '.github/*'
 
 jobs:
   build:

.gitmodules

@@ -1,9 +1,12 @@
 [submodule "rtl/utils/verilog-axis"]
 	path = rtl/utils/verilog-axis
-	url = [email protected]:zhizhenzhong/verilog-axis.git
+	url = https://github.com/zhizhenzhong/verilog-axis.git
+	branch = master
 [submodule "rtl/utils/verilog-axi"]
 	path = rtl/utils/verilog-axi
-	url = [email protected]:zhizhenzhong/verilog-axi.git
+	url = https://github.com/zhizhenzhong/verilog-axi.git
+	branch = master
 [submodule "api/lightning_lib/qick"]
 	path = api/lightning_lib/qick
-	url = [email protected]:zhizhenzhong/qick.git
+	url = https://github.com/zhizhenzhong/qick.git
+	branch = master