[scorecards] Remove outdated version comments

Dependabot doesn't update those, so it's better to remove them than keep
the stale comment. Use `git blame` to see the version number in the
upgrade CL instead.

Change-Id: I1b071db4c62154784bcdc7b4ab41f7ef95363c1f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/247547
Reviewed-by: William Hesse <whesse@google.com>

.github/workflows/scorecards-analysis.yml

@@ -21,12 +21,12 @@ jobs:
 
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@2541b1294d2704b0964813337f33b291d3f8596b # v3.0.0
+        uses: actions/checkout@2541b1294d2704b0964813337f33b291d3f8596b
         with:
           persist-credentials: false
 
       - name: "Run analysis"
-        uses: ossf/scorecard-action@3e15ea8318eee9b333819ec77a36aca8d39df13e # v1.0.4
+        uses: ossf/scorecard-action@3e15ea8318eee9b333819ec77a36aca8d39df13e
         with:
           results_file: results.sarif
           results_format: sarif
@@ -41,7 +41,7 @@ jobs:
 
       # Upload the results as artifacts (optional).
       - name: "Upload artifact"
-        uses: actions/upload-artifact@3cea5372237819ed00197afe530f5a7ea3e805c8 # v3.0.0
+        uses: actions/upload-artifact@3cea5372237819ed00197afe530f5a7ea3e805c8
         with:
           name: SARIF file
           path: results.sarif
@@ -49,6 +49,6 @@ jobs:
 
       # Upload the results to GitHub's code scanning dashboard.
       - name: "Upload to code-scanning"
-        uses: github/codeql-action/upload-sarif@27ea8f8fe5977c00f5b37e076ab846c5bd783b96 # v1.0.26
+        uses: github/codeql-action/upload-sarif@27ea8f8fe5977c00f5b37e076ab846c5bd783b96
         with:
           sarif_file: results.sarif