Update actions/download-artifact digest to 9c19ed7 (#545)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/integrationtests.yml

@@ -53,7 +53,7 @@ jobs:
       - name: Get the sources
         uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
       - name: Download build artifact
-        uses: actions/download-artifact@8caf195ad4b1dee92908e23f56eeb0696f1dd42d # v4
+        uses: actions/download-artifact@9c19ed7fe5d278cd354c7dfd5d3b88589c7e2395 # v4
         with:
           name: NuGet Package
           path: ./BuildArtifacts/Packages/NuGet
@@ -83,7 +83,7 @@ jobs:
       - name: Get the sources
         uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
       - name: Download build artifact
-        uses: actions/download-artifact@8caf195ad4b1dee92908e23f56eeb0696f1dd42d # v4
+        uses: actions/download-artifact@9c19ed7fe5d278cd354c7dfd5d3b88589c7e2395 # v4
         with:
           name: NuGet Package
           path: ./BuildArtifacts/Packages/NuGet