authorize: fix nil reference (pomerium#704) (pomerium#741)

Signed-off-by: Bobby DeSimone <bobbydesimone@gmail.com>

Backport fix for panic on reload to 0.7.x (pomerium#654)

* Fix reload panic in Authorize code (pomerium#652)

* Update changelog for 0.7.6

v0.7.5 (pomerium#625)

Signed-off-by: Bobby DeSimone <bobbydesimone@gmail.com>

pomerium-cli: add service account docs (pomerium#613)

Signed-off-by: Bobby DeSimone <bobbydesimone@gmail.com>

Bump grpc up to 1.27.1 (pomerium#609)

deployment: publish with github actions and goreleaser (pomerium#586)

* Add release workflow