chore(deps): bump the actions group with 3 updates

Bumps the actions group with 3 updates: [actions/cache](https://github.com/actions/cache), [dawidd6/action-send-mail](https://github.com/dawidd6/action-send-mail) and [trufflesecurity/trufflehog](https://github.com/trufflesecurity/trufflehog).


Updates `actions/cache` from 5.0.5 to 6.1.0
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@27d5ce7...55cc834)

Updates `dawidd6/action-send-mail` from 6e502825a508b867ab2954ad6343b68787624c01 to 994f270325d4f7257aff241a35488ef54ba364a4
- [Release notes](https://github.com/dawidd6/action-send-mail/releases)
- [Commits](dawidd6/action-send-mail@6e50282...994f270)

Updates `trufflesecurity/trufflehog` from 3.95.6 to 3.95.7
- [Release notes](https://github.com/trufflesecurity/trufflehog/releases)
- [Commits](trufflesecurity/trufflehog@30d5bb9...f446421)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: 6.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions
- dependency-name: dawidd6/action-send-mail
  dependency-version: 994f270325d4f7257aff241a35488ef54ba364a4
  dependency-type: direct:production
  dependency-group: actions
- dependency-name: trufflesecurity/trufflehog
  dependency-version: 3.95.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: actions
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/casket-pages.yml

@@ -30,7 +30,7 @@ jobs:
           ghc-version: '9.8.2'
           cabal-version: '3.10'
       - name: Cache Cabal
-        uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: |
             ~/.cabal/packages

.github/workflows/push-email-notify.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Send push notification email
-        uses: dawidd6/action-send-mail@6e502825a508b867ab2954ad6343b68787624c01 # pinned
+        uses: dawidd6/action-send-mail@994f270325d4f7257aff241a35488ef54ba364a4 # pinned
         with:
           server_address: ${{ secrets.SMTP_HOST }}
           server_port: ${{ secrets.SMTP_PORT }}

.github/workflows/secret-scanner.yml

@@ -23,7 +23,7 @@ jobs:
         with:
           fetch-depth: 0 # Full history for scanning
       - name: TruffleHog Secret Scan
-        uses: trufflesecurity/trufflehog@30d5bb91af1a771378349dbbb0c82129392acf70 # v3
+        uses: trufflesecurity/trufflehog@f446421baf832d6356c42c1743d99abff52ff334 # v3
         with:
           # The v3 action injects --fail automatically on pull_request events.
           # Passing --fail here triggers "flag 'fail' cannot be repeated".