grizzly 0.4.8

[BrewTestBot]

Created by brew bump

---

Created with brew bump-formula-pr.

release notes

This is release `v0.4.8` of Grizzly (`grr`).
## Install instructions
Binary:
# download the binary (adapt os and arch as needed)
$ curl -fSL -o "/usr/local/bin/grr" "https://github.com/grafana/grizzly/releases/download/v0.4.8/grr-linux-amd64"

# make it executable
$ chmod a+x "/usr/local/bin/grr"

# have fun :)
$ grr --help
Docker container:
https://hub.docker.com/r/grafana/grizzly
$ docker pull grafana/grizzly:0.4.8
What's Changed

Library elements can be displayed in grr serve by @K-Phoen in Proxy library elements in grr serve grafana/grizzly#494
Fix a panic when diffing on LibraryElement resources by @K-Phoen in Fix a panic when diffing on LibraryElement resources grafana/grizzly#498
Ignore secureJsonData field in Datasources when diff-ing @K-Phoen in Ignore secureJsonData field in Datasources when diff-ing  grafana/grizzly#491

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