build(deps): bump actions/checkout from 4 to 5 in the gh-actions group

Bumps the gh-actions group with 1 update: [actions/checkout](https://github.com/actions/checkout).


Updates `actions/checkout` from 4 to 5
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v4...v5)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: gh-actions
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/cd.yml

@@ -14,7 +14,7 @@ jobs:
       pull-requests: write
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - uses: ruby/setup-ruby@v1
         with:

.github/workflows/ci.yml

@@ -31,7 +31,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0 # for posts's lastmod
 

.github/workflows/codeql.yml

@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL

.github/workflows/commitlint.yml

@@ -11,5 +11,5 @@ jobs:
   commitlint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: wagoid/commitlint-github-action@v6

.github/workflows/lint-js.yml

@@ -16,7 +16,7 @@ jobs:
   lint-js:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Node.js
         uses: actions/setup-node@v4

.github/workflows/lint-scss.yml

@@ -12,7 +12,7 @@ jobs:
   lint-scss:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Node.js
         uses: actions/setup-node@v4

.github/workflows/pr-filter.yml

@@ -13,7 +13,7 @@ jobs:
 
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Check PR Content
         id: intercept

_includes/sidebar.html

@@ -52,13 +52,21 @@
     {% endunless %}
 
     {% for entry in site.data.contact %}
+      {%- assign url = null -%}
+
       {% case entry.type %}
         {% when 'github', 'twitter' %}
+          {%- unless site[entry.type].username -%}
+            {%- continue -%}
+          {%- endunless -%}
           {%- capture url -%}
             https://{{ entry.type }}.com/{{ site[entry.type].username }}
           {%- endcapture -%}
         {% when 'email' %}
-          {% assign email = site.social.email | split: '@' %}
+          {%- unless site.social.email -%}
+            {%- continue -%}
+          {%- endunless -%}
+          {%- assign email = site.social.email | split: '@' -%}
           {%- capture url -%}
             javascript:location.href = 'mailto:' + ['{{ email[0] }}','{{ email[1] }}'].join('@')
           {%- endcapture -%}