Bump restic/restic from 0.14.0 to 0.15.0 (#283)

Bumps restic/restic from 0.14.0 to 0.15.0.

---
updated-dependencies:
- dependency-name: restic/restic
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Dockerfile

@@ -6,7 +6,7 @@ RUN go mod download
 COPY . .
 RUN go build
 
-FROM restic/restic:0.14.0
+FROM restic/restic:0.15.0
 RUN apk add --no-cache rclone bash
 COPY --from=builder /app/autorestic /usr/bin/autorestic
 ENTRYPOINT []