chore(dependabot): hold back the four majors that cannot be adopted

Dependabot re-proposes these on every run, and each one takes `npm ci` or
`npm run build` from green to red with no code change in this repository that
can fix it. Closing the pull requests does nothing: without an ignore rule they
come straight back.

Each is blocked by a package we do not control, verified against the registry
rather than assumed:

- typescript 7      typescript-eslint hard-throws on TS >= 7 (a `versionMajor
                    >= 7` guard in its dist/index.js) and every published
                    version still peers `typescript: ">=4.8.4 <6.1.0"`.
- webpack-cli 7     @nextcloud/webpack-vue-config 7.0.4, the LATEST, peers
                    `webpack-cli: ^6.0.1`.
- @babel/core 8     the same package peers `@babel/core: ^7.22.9`.
- @babel/preset-env preset-env 8 requires core 8, so the pair moves together
                    or not at all. Splitting them is what broke filinq.

These are COMPATIBILITY limits, not security ones. `npm audit` reports no
advisory against any version pinned here, so holding them costs no exposure.
Lift each the moment its blocker ships support.

Deliberately NOT held: stylelint 17, vitest 4 and pinia 4. All three were
blocked earlier today and all three are now adoptable, so dependabot should
keep proposing them.

Author: rubenvdlinde

.github/dependabot.yml

@@ -6,6 +6,32 @@ updates:
       interval: "weekly"
     target-branch: "development"
     open-pull-requests-limit: 10
+    # HELD BACK DELIBERATELY, not out of caution. Each of these is blocked by a
+    # package we do not control, and dependabot cannot see that, so it proposes
+    # them on every run and each one takes `npm ci` or `npm run build` from
+    # green to red with no code change that can fix it.
+    #
+    # typescript 7:  typescript-eslint hard-throws on TS >= 7 (a `versionMajor
+    #                >= 7` guard in its dist/index.js) and every published
+    #                version still peers `typescript: ">=4.8.4 <6.1.0"`.
+    # webpack-cli 7: @nextcloud/webpack-vue-config 7.0.4, the latest, peers
+    #                `webpack-cli: ^6.0.1`.
+    # @babel/core 8: the same package peers `@babel/core: ^7.22.9`, and
+    #                preset-env 8 requires core 8, so the pair moves together
+    #                or not at all.
+    #
+    # Lift each the moment its blocker ships support. These are compatibility
+    # limits, not security ones: `npm audit` reports no advisory against any of
+    # the versions pinned here.
+    ignore:
+      - dependency-name: "typescript"
+        update-types: ["version-update:semver-major"]
+      - dependency-name: "webpack-cli"
+        update-types: ["version-update:semver-major"]
+      - dependency-name: "@babel/core"
+        update-types: ["version-update:semver-major"]
+      - dependency-name: "@babel/preset-env"
+        update-types: ["version-update:semver-major"]
     cooldown:
       default-days: 1
       include: