chore(deps): update actions/checkout action to v2.6.0

.github/workflows/build.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-20.04
     if: github.repository == 'freeCodeCamp/devdocs'
     steps:
-    - uses: actions/checkout@e2f20e631ae6d7dd3b768f56a5d2af784dd54791 # tag=v2.5.0
+    - uses: actions/checkout@dc323e67f16fb5f7663d20ff7941f27f5809e9b6 # v2.6.0
     - name: Set up Ruby
       uses: ruby/setup-ruby@ee2113536afb7f793eed4ce60e8d3b26db912da4 # v1.127.0
       with:

.github/workflows/schedule-doc-report.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-20.04
     if: github.repository == 'freeCodeCamp/devdocs'
     steps:
-    - uses: actions/checkout@e2f20e631ae6d7dd3b768f56a5d2af784dd54791 # tag=v2.5.0
+    - uses: actions/checkout@dc323e67f16fb5f7663d20ff7941f27f5809e9b6 # v2.6.0
     - name: Set up Ruby
       uses: ruby/setup-ruby@ee2113536afb7f793eed4ce60e8d3b26db912da4 # v1.127.0
       with:

.github/workflows/test.yml

@@ -9,7 +9,7 @@ jobs:
   test:
     runs-on: ubuntu-20.04
     steps:
-    - uses: actions/checkout@e2f20e631ae6d7dd3b768f56a5d2af784dd54791 # tag=v2.5.0
+    - uses: actions/checkout@dc323e67f16fb5f7663d20ff7941f27f5809e9b6 # v2.6.0
     - name: Set up Ruby
       uses: ruby/setup-ruby@ee2113536afb7f793eed4ce60e8d3b26db912da4 # v1.127.0
       with: