make cache action unix compatible and update test agent (#5464)

* use tar for everything

* update test-agent to 1.21.1

Author: rochdev

.github/actions/install/action.yml

@@ -11,15 +11,15 @@ runs:
     - id: yarn-cache
       uses: actions/cache@v4
       with:
-        key: yarn-cache-${{ github.workflow }}-${{ github.job }}-${{ hashFiles('yarn.lock') }}
+        key: yarn-cache-${{ github.workflow }}-${{ github.job }}-${{ hashFiles('yarn.lock') }}-v2
         path: node_modules.tar
       if: inputs.cache == 'true'
-    - run: 7z x -y node_modules.tar
+    - run: tar -xf node_modules.tar
       shell: bash
       if: inputs.cache == 'true' && steps.yarn-cache.outputs.cache-hit == 'true'
       # Retry in case of server error from registry.
     - run: yarn install --frozen-lockfile --ignore-engines || yarn install --frozen-lockfile --ignore-engines
       shell: bash
-    - run: 7z -mx0 a node_modules.tar node_modules
+    - run: tar -cf node_modules.tar node_modules
       shell: bash
       if: inputs.cache == 'true' && steps.yarn-cache.outputs.cache-hit != 'true'

.github/workflows/plugins.yml

@@ -853,7 +853,7 @@ jobs:
           - 1521:1521
           - 5500:5500
       testagent:
-        image: ghcr.io/datadog/dd-apm-test-agent/ddapm-test-agent:v1.16.0
+        image: ghcr.io/datadog/dd-apm-test-agent/ddapm-test-agent:v1.21.1
         env:
           LOG_LEVEL: DEBUG
           TRACE_LANGUAGE: javascript

docker-compose.yml

@@ -155,7 +155,7 @@ services:
       - LDAP_PASSWORDS=password1,password2
 
   testagent:
-    image: ghcr.io/datadog/dd-apm-test-agent/ddapm-test-agent:v1.16.0
+    image: ghcr.io/datadog/dd-apm-test-agent/ddapm-test-agent:v1.21.1
     ports:
         - "127.0.0.1:9126:9126"
     environment: