bundler support tags doc (#61420)

Co-authored-by: v-HaripriyaC <v-haripriyac@microsoft.com>
Co-authored-by: Joe Clark <31087804+jc-clark@users.noreply.github.com>

Author: 3 people

data/reusables/dependabot/dependabot-updates-supported-versioning-tags.md

@@ -13,3 +13,10 @@ The `dependabot.yml` file doesn't control the versioning tags that you can use,
 | sbt                 | `sbt`          | `alpha, a, beta, b, milestone, m, rc, cr, sp, ga, final, release, snapshot` | `akka-actor@2.7.0-RC1`, `play-json@3.0.0-M1` |
 | {% endif %} |
 | yarn                | `npm`          | `alpha`, `beta`, `canary`, `dev`, `experimental`, `latest`, `legacy`, `next`, `nightly`, `rc`, `release`, `stable` | `lodash@1.2.0-alpha`, `axios@latest`, `moment@nightly` |
+| Bundler             | `bundler`      | `alpha`, `beta`, `rc`, `pre` | `rails@1.0.0.alpha`, `rack@1.0.0.beta1`, `rspec@1.0.0.rc2` |
+
+#### Ecosystem-specific versioning details
+
+The following details describe how {% data variables.product.prodname_dependabot %} interprets versioning for specific ecosystems.
+
+* **Bundler:** Bundler does not use a fixed set of prerelease tags. Any version segment containing a letter is treated as a prerelease (for example, `.alpha`, `.beta1`, `.rc2`). Hyphens in version strings are normalized to `.pre.` internally (for example, `1.0.0-beta` becomes `1.0.0.pre.beta`).