chore: pre-release upgrade to upload-artifact v4

Author: alessio-form3

.github/workflows/ci.yaml

@@ -37,13 +37,12 @@ jobs:
         run: echo "${{ needs.calculate-tag.outputs.tag }}" | sed s/v//g > VERSION
       - name: Package
         run: make crossbuild-tarballs
-      - name: print
-        run: ls -lart .tarballs
       - name: Archive artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: tarballs
-          path: .tarballs/postgres_exporter*
+          include-hidden-files: true
+          path: ./.tarballs/*.tar.gz
 
   commit-message:
     runs-on: ubuntu-latest
@@ -69,7 +68,7 @@ jobs:
     if: contains(needs.commit-message.outputs.head-commit-message, 'pre-release') || startsWith(github.ref, 'refs/tags')
     steps:
       - name: Download artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: tarballs
       - name: Create GH release

collector/pg_stat_statements_summary.go

@@ -37,13 +37,13 @@ func NewPGStatStatementsSummaryCollector(config collectorConfig) (Collector, err
 
 var (
 	statSTatementsSummaryCallsTotal = prometheus.NewDesc(
-		prometheus.BuildFQName(namespace, statStatementsSubsystem, "calls_total"),
+		prometheus.BuildFQName(namespace, statStatementsSummarySubsystem, "calls_total"),
 		"Number of times executed",
 		[]string{"datname"},
 		prometheus.Labels{},
 	)
 	statStatementsSummarySecondsTotal = prometheus.NewDesc(
-		prometheus.BuildFQName(namespace, statStatementsSubsystem, "seconds_total"),
+		prometheus.BuildFQName(namespace, statStatementsSummarySubsystem, "seconds_total"),
 		"Total time spent in the statement, in seconds",
 		[]string{"datname"},
 		prometheus.Labels{},