update workflow versions

.github/workflows/build-and-test.yml

@@ -35,7 +35,7 @@ jobs:
     # Install will only run on cache miss.
     - name: cache hypre
       id: hypre-cache
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         path: ${{ env.HYPRE_TOP_DIR }}
         key: ${{ runner.os }}-build-${{ env.HYPRE_TOP_DIR }}-v2
@@ -51,7 +51,7 @@ jobs:
     # Install will only run on cache miss.
     - name: cache metis
       id: metis-cache
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         path: ${{ env.METIS_TOP_DIR }}
         key: ${{ runner.os }}-build-${{ env.METIS_TOP_DIR }}-v2
@@ -80,7 +80,7 @@ jobs:
     # Install will only run on cache miss.
     - name: cache mfem
       id: mfem-cache
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         path: ${{ env.MFEM_TOP_DIR }}
         key: ${{ runner.os }}-build-${{ env.MFEM_TOP_DIR }}-${{ env.MFEM_COMMIT }}-v3
@@ -115,7 +115,7 @@ jobs:
 
     - name: Archive test results patch
       if: always()
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: baseline-patch
         path: remhos/baseline.patch