Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/1154

According to
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy,
having both a header and the `<meta>`-tag provided by Element itself is
not a problem. The 2 CSP policies get combined.

https://github.com/matrix-org/synapse/releases/tag/v1.37.1

update to v0.2.0

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/1140

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/1131

The new one is based on Alpine 3.14, instead of Alpine 3.13.

https://github.com/vector-im/element-web#configuration-best-practices

Should have been part of 9daeb39710

https://github.com/vector-im/hydrogen-web/releases/tag/v0.1.57

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/1108

Without this the hydrogen task would fail for Ansible 2.7 even when hydrogen is not enabled.