ci: failure to download 0.14.3-win64.zip in Win test cross-built #33913

This is happening semi-frequently:

https://github.com/bitcoin/bitcoin/actions/runs/19520873587/job/55885060054:

Run ./test/get_previous_releases.py --target-dir $PREVIOUS_RELEASES_DIR

Download failed: Remote end closed connection without response
Releases directory: D:\a\_temp/previous_releases
Fetching: https://bitcoincore.org/bin/bitcoin-core-0.14.3/bitcoin-0.14.3-win64.zip
Error: Process completed with exit code 1.

https://github.com/bitcoin/bitcoin/actions/runs/19239483669/job/55006759227:

 Releases directory: D:\a\_temp/previous_releases
Fetching: https://bitcoincore.org/bin/bitcoin-core-0.14.3/bitcoin-0.14.3-win64.zip

Download failed: [WinError 10054] An existing connection was forcibly closed by the remote host
Downloading: [----------------------------------------] 0.0%
Error: Process completed with exit code 1.

https://github.com/bitcoin/bitcoin/actions/runs/19481968460/job/55756476621:

Run ./test/get_previous_releases.py --target-dir $PREVIOUS_RELEASES_DIR

Download failed: [WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond
Releases directory: D:\a\_temp/previous_releases
Fetching: https://bitcoincore.org/bin/bitcoin-core-0.14.3/bitcoin-0.14.3-win64.zip
Error: Process completed with exit code 1.

yeah, network requests should be retried.

An alternative could be to cache the bins, but I am not sure how large they are and if the diff is worth it. It could look something like this, if the simply retry does not improve things:

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7ba353a..3e2e1a1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -394,6 +394,7 @@ jobs:
     env:
       PYTHONUTF8: 1
       TEST_RUNNER_TIMEOUT_FACTOR: 40
+      CONTAINER_NAME: windows-native-test
 
     steps:
       - *ANNOTATION_PR_NUMBER
@@ -452,6 +453,27 @@ jobs:
         run: |
           echo "PREVIOUS_RELEASES_DIR=${{ runner.temp }}/previous_releases" >> "$GITHUB_ENV"
 
+      - name: Set previous releases hash
+        run: |
+          PREVIOUS_RELEASES_HASH=$(py -3 - <<'PY'
+          import hashlib, subprocess
+          data = subprocess.check_output(["git", "ls-tree", "HEAD", "test/get_previous_releases.py"])
+          print(hashlib.sha256(data).hexdigest())
+          PY)
+          echo "PREVIOUS_RELEASES_HASH=$PREVIOUS_RELEASES_HASH" >> "$GITHUB_ENV"
+
+      - name: Restore previous releases cache
+        id: previous-releases
+        uses: actions/cache/restore@v4
+        with:
+          path: ${{ env.PREVIOUS_RELEASES_DIR }}
+          key: previous-releases-${{ env.CONTAINER_NAME }}-${{ env.PREVIOUS_RELEASES_HASH }}
+          restore-keys: |
+            previous-releases-${{ env.CONTAINER_NAME }}-
+
+      - name: Record previous releases cache hit
+        run: echo "PREVIOUS_RELEASES_CACHE_HIT=${{ steps.previous-releases.outputs.cache-hit }}" >> "$GITHUB_ENV"
+
       - name: Get previous releases
         run: ./.github/get_previous_releases_with_retry.py --target-dir $PREVIOUS_RELEASES_DIR
 
@@ -463,6 +485,13 @@ jobs:
           TEST_RUNNER_EXTRA: ${{ github.event_name != 'pull_request' && '--extended' || '' }}
         run: py -3 test/functional/test_runner.py --jobs $NUMBER_OF_PROCESSORS --ci --quiet --tmpdirprefix="$RUNNER_TEMP" --combinedlogslen=99999999 --timeout-factor=$TEST_RUNNER_TIMEOUT_FACTOR $EXCLUDE $TEST_RUNNER_EXTRA
 
+      - name: Save previous releases cache
+        if: ${{ (github.event_name == 'push') && (github.ref_name == github.event.repository.default_branch) && (env.PREVIOUS_RELEASES_CACHE_HIT != 'true') }}
+        uses: actions/cache/save@v4
+        with:
+          path: ${{ env.PREVIOUS_RELEASES_DIR }}
+          key: previous-releases-${{ env.CONTAINER_NAME }}-${{ env.PREVIOUS_RELEASES_HASH }}
+
   ci-matrix:
     name: ${{ matrix.name }}
     needs: runners