Update image scan workflow to v1.33.0. (aws-observability#990)

*Issue #, if available:*

*Description of changes:*
1. Updating image scan workflow to v1.32.6 as part of MCM release for
new
version.
2. update actions/upload-artifact and actions/download-artifact to v4 as
v3 is marking as deprecated:
https://github.blog/changelog/2024-04-16-deprecation-notice-v3-of-the-artifact-actions/

By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache 2.0 license.

Author: zzhlogin

.github/workflows/application-signals-e2e-test.yml

@@ -31,7 +31,7 @@ jobs:
           role-to-assume: arn:aws:iam::${{ secrets.APPLICATION_SIGNALS_E2E_TEST_ACCOUNT_ID }}:role/${{ secrets.APPLICATION_SIGNALS_E2E_TEST_ROLE_NAME }}
           aws-region: us-east-1
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: aws-opentelemetry-agent.jar
 

.github/workflows/main-build.yml

@@ -128,7 +128,7 @@ jobs:
           snapshot-ecr-role: ${{ secrets.JAVA_INSTRUMENTATION_SNAPSHOT_ECR }}
 
       - name: Upload to GitHub Actions
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: aws-opentelemetry-agent.jar
           path: otelagent/build/libs/aws-opentelemetry-agent-*.jar

.github/workflows/nightly-upstream-snapshot-build.yml

@@ -81,7 +81,7 @@ jobs:
           snapshot-ecr-role: ${{ secrets.JAVA_INSTRUMENTATION_SNAPSHOT_ECR }}
 
       - name: Upload to GitHub Actions
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: aws-opentelemetry-agent.jar
           path: otelagent/build/libs/aws-opentelemetry-agent-*.jar

.github/workflows/owasp.yml

@@ -77,15 +77,15 @@ jobs:
         id: high_scan
         uses: ./.github/actions/image_scan
         with:
-          image-ref: "public.ecr.aws/aws-observability/adot-autoinstrumentation-java:v1.32.6"
+          image-ref: "public.ecr.aws/aws-observability/adot-autoinstrumentation-java:v1.33.0"
           severity: 'CRITICAL,HIGH'
 
       - name: Perform low image scan
         if: always()
         id: low_scan
         uses: ./.github/actions/image_scan
         with:
-          image-ref: "public.ecr.aws/aws-observability/adot-autoinstrumentation-java:v1.32.6"
+          image-ref: "public.ecr.aws/aws-observability/adot-autoinstrumentation-java:v1.33.0"
           severity: 'MEDIUM,LOW,UNKNOWN'
 
       - name: Configure AWS Credentials for emitting metrics