Update release docs & remove snapcraft (#1174)

Author: pdabelf5

README.md

@@ -7,7 +7,6 @@
 ![GitHub all releases](https://img.shields.io/github/downloads/nginx/nginx-prometheus-exporter/total?logo=github)
 ![GitHub release (latest by SemVer)](https://img.shields.io/github/downloads/nginx/nginx-prometheus-exporter/latest/total?sort=semver&logo=github)
 [![GitHub release (latest SemVer)](https://img.shields.io/github/v/release/nginx/nginx-prometheus-exporter?logo=github&sort=semver)](https://github.com/nginx/nginx-prometheus-exporter/releases/latest)
-[![nginx-prometheus-exporter](https://snapcraft.io/nginx-prometheus-exporter/badge.svg)](https://snapcraft.io/nginx-prometheus-exporter)
 ![GitHub go.mod Go version](https://img.shields.io/github/go-mod/go-version/nginx/nginx-prometheus-exporter?logo=go)
 [![Docker Pulls](https://img.shields.io/docker/pulls/nginx/nginx-prometheus-exporter?logo=docker&logoColor=white)](https://hub.docker.com/r/nginx/nginx-prometheus-exporter)
 ![Docker Image Size (latest semver)](https://img.shields.io/docker/image-size/nginx/nginx-prometheus-exporter?logo=docker&logoColor=white&sort=semver)
@@ -54,7 +53,6 @@ NGINX Prometheus exporter makes it possible to monitor NGINX or NGINX Plus using
   - [Docker images](#docker-images)
   - [Binaries](#binaries)
   - [Homebrew](#homebrew)
-  - [Snap](#snap)
   - [Scoop](#scoop)
   - [Nix](#nix)
 - [Building the Exporter](#building-the-exporter)
@@ -475,14 +473,6 @@ and then install the formula with
 brew install nginx-prometheus-exporter
 ```
 
-### Snap
-
-You can install the NGINX Prometheus Exporter from the [Snap Store](https://snapcraft.io/nginx-prometheus-exporter).
-
-```console
-snap install nginx-prometheus-exporter
-```
-
 ### Scoop
 
 You can add the NGINX Scoop bucket with

release-process.md

@@ -31,15 +31,24 @@ the [Issue Lifecycle](/ISSUE_LIFECYCLE.md) document for information on issue cre
    to ensure that everything is in order.
 4. Create a PR to update the version in the `Makefile` and [README](README.md) to the new version, and any other necessary
    changes.
-5. Once the PR is merged, create a new release tag in the format `vX.Y.Z`:
+5. Once the PR is merged, run the release workflow called `Release NGINX Prometheus Exporter` with the new version for the
+   `version` input:
 
-   ```bash
-   git tag -a vX.Y.Z -m "Release vX.Y.Z"
-   git push origin vX.Y.Z
+   ```text
+   inputs.version: 1.5.1
+   ```
+
+   You can optionally use the following inputs:
+
+   ```text
+   inputs.dry_run # Run the release but don't push or publish any artifacts.
+   inputs.goreleaser_args # Any additional `goreleaser` args you want to pass.
+   inputs.skip_jobs # Comma separated list of jobs to be skipped, useful for reruns.
+   inputs.branch # Branch to release from (e.g., when re-running a previous release)
    ```
 
    As a result, the CI/CD pipeline will:
 
    - Build the Docker image and push it to the registries.
-   - Publish the release to Snapcraft, Homebrew, Scoop, and Nix.
+   - Publish the release to Homebrew, Scoop, and Nix.
    - Create a GitHub release with the autogenerated changelog and artifacts attached.