Add GPG_PRIVATE_KEY_FILE to .release-env #97

Job	Run time
ci / ci / actionlint	4s
ci / ci / govulncheck / govulncheck	1m 0s
ci / ci / lint / lint	1m 18s
ci / ci / build / set-go-matrix	1s
ci / ci / test / set-go-matrix	1s
ci / ci / codeql / CodeQL Analyze (go)	1m 34s
ci / ci / test / test (stable)	1m 20s
ci / ci / test / test (oldstable)	1m 22s
ci / ci / build / build (stable)	59s
ci / ci / build / build (oldstable)	1m 7s
Create Release	4s
Upload Assets to Github w/ goreleaser	5m 51s
Build & Upload Cloud-Only Docker Image / Build & Upload Docker Images	21m 39s
Build & Upload Docker Image / Build & Upload Docker Images	22m 46s
Build & Upload Debian Docker Image / Build & Upload Docker Images	23m 29s
Build & Upload Wolfi Docker Image / Build & Upload Docker Images	1m 34s
	1h 24m 9s

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