Bump actions/upload-artifact from 2 to 3

Author: scordio

.github/workflows/binary-compatibility.yml

@@ -70,7 +70,7 @@ jobs:
         run: cat target/japicmp/default-cli.diff
       - name: Upload reports
         if: success() || failure()
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         with:
           name: japicmp
           path: target/japicmp

.github/workflows/pitest-receive-pr.yml

@@ -42,7 +42,7 @@ jobs:
       - name: aggregate files
         run: mvn -e -B -Ppitest pitest-git:aggregate
       - name: upload results
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         with:
           name: pitest
           path: target/pit-reports-ci/