build(deps): bump linkerd/dev from 48 to 49

Bumps [linkerd/dev](https://github.com/linkerd/dev) from 48 to 49.
- [Release notes](https://github.com/linkerd/dev/releases)
- [Commits](linkerd/dev@v48...v49)

---
updated-dependencies:
- dependency-name: linkerd/dev
  dependency-version: '49'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/actions.yml

@@ -14,13 +14,13 @@ jobs:
     runs-on: ${{ vars.LINKERD2_RUNNER || 'ubuntu-24.04' }}
     timeout-minutes: 10
     steps:
-      - uses: linkerd/dev/actions/setup-tools@v48
+      - uses: linkerd/dev/actions/setup-tools@v49
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
       - run: just-dev lint-actions
 
   devcontainer-versions:
     runs-on: ${{ vars.LINKERD2_RUNNER || 'ubuntu-24.04' }}
     steps:
-      - uses: linkerd/dev/actions/setup-tools@v48
+      - uses: linkerd/dev/actions/setup-tools@v49
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
       - run: just-dev check-action-images

.github/workflows/devcontainer.yml

@@ -39,6 +39,6 @@ jobs:
   devcontainer-image:
     runs-on: ${{ vars.LINKERD2_RUNNER || 'ubuntu-24.04' }}
     steps:
-      - uses: linkerd/dev/actions/setup-tools@v48
+      - uses: linkerd/dev/actions/setup-tools@v49
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
       - run: just-dev pull-dev-image

.github/workflows/shell.yml

@@ -16,6 +16,6 @@ jobs:
     timeout-minutes: 10
     runs-on: ${{ vars.LINKERD2_RUNNER || 'ubuntu-24.04' }}
     steps:
-      - uses: linkerd/dev/actions/setup-tools@v48
+      - uses: linkerd/dev/actions/setup-tools@v49
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
       - run: just sh-lint