ci/cd : added opa to github actions #3889

Job	Run time
version / Compute	1s
version / Compute	1s
gradle-build / Build	3m 32s
gradle-build / Build	9m 53s
docker-build / Build (waltid-services/waltid-issuer-api, issuer-api)	4m 17s
docker-build / Build (waltid-services/waltid-issuer-api, issuer-api)	4m 17s
docker-build / Build (waltid-services/waltid-verifier-api, verifier-api)	3m 55s
docker-build / Build (waltid-services/waltid-verifier-api, verifier-api)	3m 55s
docker-build / Build (waltid-services/waltid-wallet-api, wallet-api)	4m 18s
docker-build / Build (waltid-services/waltid-wallet-api, wallet-api)	4m 18s
docker-build / Build (waltid-applications/waltid-web-wallet/apps/waltid-demo-wallet, waltid-demo-wallet)	1m 6s
docker-build / Build (waltid-applications/waltid-web-wallet/apps/waltid-demo-wallet, waltid-demo-wallet)	1m 6s
docker-build / Build (waltid-applications/waltid-web-wallet/apps/waltid-dev-wallet, waltid-dev-wallet)	1m 9s
docker-build / Build (waltid-applications/waltid-web-wallet/apps/waltid-dev-wallet, waltid-dev-wallet)	1m 9s
docker-build / Build (waltid-applications/waltid-web-portal, portal)	1m 23s
docker-build / Build (waltid-applications/waltid-web-portal, portal)	1m 23s
	45m 43s

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