Fix release notes harvesting (#5027)

### Changes

- Use pagination in release note collection scripts

### Issues 

#4991

scripts/buildkite/release/make_changelog.sh

@@ -2,28 +2,54 @@
 
 set -euo pipefail
 
-since_date="$(buildkite-agent meta-data get last-release-date)"
+if [ -n "${BUILDKITE:-}" ]; then
+    since_date="$(buildkite-agent meta-data get last-release-date)"
+fi
 
-fetch_prs() {
-    curl --silent \
-    -H "Accept: application/vnd.github+json" \
-    -H "Authorization: Bearer $GITHUB_TOKEN" \
-    -H "X-GitHub-Api-Version: 2022-11-28" \
-    "https://api.github.com/search/issues?q=repo:cardano-foundation/cardano-wallet+is:pr+is:merged+merged:%3E$since_date"
-    }
+per_page=30
+fetch_prs_at_page() {
+    results=$(curl --silent \
+        -H "Accept: application/vnd.github+json" \
+        -H "Authorization: Bearer $GITHUB_TOKEN" \
+        -H "X-GitHub-Api-Version: 2022-11-28" \
+        "https://api.github.com/search/issues?q=repo:cardano-foundation/cardano-wallet+is:pr+is:merged+merged:%3E$since_date&per_page=$per_page&page=$1")
+    echo "$results"
+}
 
-prs=$(fetch_prs | jq '.items | map({date:.pull_request.merged_at | split("T")[0], number:.number,title:.title,labels:.labels| map(.name),author:.user.login })')
+fetch_prs() {
+    local page=1
+    local all_items=""
+    local retrieved_count=0
+    while true; do
+        results=$(fetch_prs_at_page "$page")
+        new_items=$(jq '.items | map({date:.pull_request.merged_at | split("T")[0], number:.number,title:.title,labels:.labels| map(.name),author:.user.login })' <<<"$results")
+        all_items=$(jq -s '.[0] + .[1]' <(echo "$all_items") <(echo "$new_items"))
+        total_count=$(jq '.total_count' <<<"$results")
+        items_count=$(jq 'length' <<<"$new_items")
+        retrieved_count=$((retrieved_count + items_count))
+        if [ "$retrieved_count" -lt "$total_count" ]; then
+            page=$((page + 1))
+        else
+            break
+        fi
+    done
+    echo "$all_items"
+}
 
-items=$(jq 'map("\(.date), #\(.number), \(.author), \(.labels | join(", ")), \(.title)")' <<< "$prs")
-item_max=$(jq 'length - 1' <<< "$items")
+items=$(fetch_prs)
+sorted_items=$(jq 'sort_by(.date)' <<<"$items")
+string_items=$(jq 'map("\(.date), #\(.number), \(.author), \(.labels | join(", ")), \(.title)")' <<<"$sorted_items")
+item_max=$(jq 'length - 1' <<<"$items")
 
 mkdir -p artifacts
 
+rm -f artifacts/changes.md
+
 for i in $(seq 0 "$item_max"); do
-    item=$(jq -r ".[$i]" <<< "$items")
-    echo "$item" \
-        | sed -E 's,\[(ADP\-[0-9]+)\],[\1](https://cardanofoundation.atlassian.net/browse/\1),g' \
-        | sed -E 's,\[ADP-x+\],,g' \
-        | sed -E 's,#([0-9]+),[#\1](https://github.com/cardano-foundation/cardano-wallet/pull/\1),g' \
-        >> artifacts/changes.md
+    item=$(jq -r ".[$i]" <<<"$string_items")
+    echo "$item" |
+        sed -E 's,\[(ADP\-[0-9]+)\],[\1](https://cardanofoundation.atlassian.net/browse/\1),g' |
+        sed -E 's,\[ADP-x+\],,g' |
+        sed -E 's,#([0-9]+),[#\1](https://github.com/cardano-foundation/cardano-wallet/pull/\1),g' \
+            >>artifacts/changes.md
 done