Fix required for target (#537)

* [skip ci] Fix required for target

* fix required

* Make target optional in workflow

Author: fcollonval

.github/actions/prep-release/action.yml

@@ -6,7 +6,7 @@ inputs:
     required: true
   target:
     description: "The owner/repo GitHub target"
-    required: true
+    required: false
   version_spec:
     description: "New Version Specifier"
     default: "next"

.github/actions/publish-changelog/action.yml

@@ -6,7 +6,7 @@ inputs:
     required: true
   target:
     description: "The owner/repo GitHub target"
-    required: true
+    required: false
   branch:
     description: "The branch to target"
     required: false

.github/workflows/prep-release.yml

@@ -4,7 +4,7 @@ on:
     inputs:
       target:
         description: "The owner/repo GitHub target"
-        required: true
+        required: false
       version_spec:
         description: "New Version Specifier"
         default: "next"

.github/workflows/publish-changelog.yml

@@ -7,7 +7,7 @@ on:
         required: true
       target:
         description: "The owner/repo GitHub target"
-        required: true
+        required: false
       branch:
         description: "The branch to target"
         required: false