github: bump timeout duration for acceptance tests

Last run failed after ~3h runtime, which is dangerously close to the
timeout previously set. While the logs don't show stack traces, it's
possible they did timeout, so to highten their chances to finish the
acutal tests, we bump the timeout to 5h, and raise the session duration
for the token to 6h.

.github/workflows/acceptance-tests.yml

@@ -58,11 +58,11 @@ jobs:
           aws-region: "${{ secrets.AWS_ACC_TEST_REGION }}"
           role-to-assume: "${{ secrets.AWS_ACC_TEST_ROLE }}"
           role-session-name: "packer-aws-acceptance-tests"
-          role-duration-seconds: 14400 # 4h
+          role-duration-seconds: 21600 # 6h
       - run: |
           echo "Testing with Go ${{ needs.get-go-version.outputs.go-version }}"
           PACKER_ACC=1 go test \
-            -timeout 3h \
+            -timeout 5h \
             -count 1 \
             -run "${{ github.event.inputs.run_pattern }}" \
             ./builder/ebs