chore(github-action): pin actions/checkout action v2 → (#28043)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [actions/checkout](https://redirect.github.com/actions/checkout) |
action | pinDigest | -> `ee0669b` |

Add the preset `:preserveSemverRanges` to your config if you don't want
to pin your dependencies.

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.github/workflows/charts-release.yaml

@@ -32,7 +32,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
 
       - name: Filter paths
         id: filter

.github/workflows/clustertool.tests.yaml

@@ -37,7 +37,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
 
       - name: Filter paths
         id: filter

.github/workflows/common-tests.yaml

@@ -28,7 +28,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
 
       - name: Filter paths
         id: filter