✨ Extends version matching with quotes and - annotated tags"

In this commit I added support to match the version when it is enclosed
in quotes (Example: REVIEWDOG_VERSION = "v0.1.0"). I also added support
for version tags that contain a - annotation text (example: REVIEWDOG=v0.1.0-nightly20201208+12faa31).
You can check out the regex syntax on https://regex101.com/r/t1JcmL/10.

Dockerfile

@@ -1,6 +1,6 @@
 FROM alpine:3.10
 
-RUN apk --no-cache add git jq curl grep coreutils
+RUN apk --no-cache add git jq curl grep coreutils perl
 
 COPY entrypoint.sh /entrypoint.sh