chore: switch https to ssh for submodule

Signed-off-by: Charles Chin <[email protected]>

Author: eallion

.github/workflows/main.yml

@@ -44,7 +44,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
         with:
-          submodules: true
+          submodules: recursive
           fetch-depth: 1
 
       - name: Setup Hugo

.gitmodules

@@ -1,3 +1,3 @@
 [submodule "themes/pehe"]
 	path = themes/pehe
-	url = https://github.com/eallion/pehe.git
+	url = git@github.com:eallion/pehe.git