chore(deps): update docker/build-push-action action to v4 (#6)

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

Author: renovate[bot]

.github/workflows/build-image.yml

@@ -37,7 +37,7 @@ jobs:
             org.label-schema.url=https://github.com/joundso/r_datascience
             org.label-schema.vsc-url=https://github.com/joundso/r_datascience
       - name: Build and push base image
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v4
         with:
           file: ./Dockerfiles/rdsc_base_j.dockerfile
           push: ${{ github.event_name != 'pull_request' }}
@@ -61,7 +61,7 @@ jobs:
             org.label-schema.url=https://github.com/joundso/r_datascience
             org.label-schema.vsc-url=https://github.com/joundso/r_datascience
       - name: Build and push headless image
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v4
         with:
           file: ./Dockerfiles/rdsc_headless_j.dockerfile
           push: ${{ github.event_name != 'pull_request' }}
@@ -85,7 +85,7 @@ jobs:
             org.label-schema.url=https://github.com/joundso/r_datascience
             org.label-schema.vsc-url=https://github.com/joundso/r_datascience
       - name: Build and push RStudio image
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v4
         with:
           file: ./Dockerfiles/rdsc_rstudio_j.dockerfile
           push: ${{ github.event_name != 'pull_request' }}