DOC-373: fix broken Update Parity Docs pipeline

Since the localstack-pro CI restructure (PR #7263, June 2026), the
parity-metric-* artifacts are only uploaded by scheduled nightly runs
of the 'AWS / Build, Test, Push' workflow, while push-triggered runs
(the vast majority) only execute acceptance tests. The artifact search
window of 20 runs therefore no longer contained any run with parity
metrics. Raise the search window (LIMIT) to 200 runs so the latest
successful nightly run is found.

Also remove the download step for the Free Plan K8s pipeline: the
'AWS / Community K8S tests' workflow was deleted from localstack-pro
in the same restructure, so its artifacts no longer exist.

Author: HarshCasper

.github/workflows/docs-parity-updates.yml

@@ -48,8 +48,13 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.PRO_ACCESS_TOKEN }}
           REPOSITORY_NAME: localstack-pro
           ARTIFACT_ID: parity-metric-pro-raw-amd*
-          WORKFLOW: "AWS / Build, Test, Push" 
+          WORKFLOW: "AWS / Build, Test, Push"
           PREFIX_ARTIFACT: pro-integration-test
+          # The parity-metric-* artifacts are only uploaded by scheduled (nightly) runs of the
+          # AWS main pipeline; push-triggered runs only execute acceptance tests. Scan a larger
+          # window of runs so the search reaches the latest successful nightly run among the
+          # far more frequent push-triggered runs.
+          LIMIT: 200
 
       - name: Download coverage (capture-notimplemented) data from Enterprise pipeline (GitHub)
         working-directory: docs
@@ -70,6 +75,8 @@ jobs:
           ARTIFACT_ID: parity-metric-raw-amd*
           WORKFLOW: "AWS / Build, Test, Push"
           PREFIX_ARTIFACT: community-integration-test
+          # See the comment on the Enterprise pipeline metrics step above.
+          LIMIT: 200
 
       - name: Download coverage (capture-notimplemented) data from Free Plan pipeline (GitHub)
         working-directory: docs
@@ -101,16 +108,6 @@ jobs:
           WORKFLOW: "AWS / Pro K8s tests"
           PREFIX_ARTIFACT: k8s-integration-test
 
-      - name: Download coverage data for Free Plan K8s pipeline (integration tests) (GitHub)
-        working-directory: docs
-        run: /tmp/get_latest_github_metrics.sh ./target main
-        env:
-          GITHUB_TOKEN: ${{ secrets.PRO_ACCESS_TOKEN }}
-          REPOSITORY_NAME: localstack-pro
-          ARTIFACT_ID: parity-metric-community-k8s-integration-raw-*
-          WORKFLOW: "AWS / Community K8S tests"
-          PREFIX_ARTIFACT: k8s-community-integration-test
-
       - name: Create Parity Coverage Docs
         working-directory: docs
         run: |