Bump actions/cache from 4.2.0 to 4.2.1

Bumps [actions/cache](https://github.com/actions/cache) from 4.2.0 to 4.2.1.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@1bd1e32...0c907a7)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

.github/workflows/buildmgr.yml

@@ -365,7 +365,7 @@ jobs:
           submodules: true
 
       - name: Cache ARM GCC
-        uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57 # v4.2.0
+        uses: actions/cache@0c907a75c2c80ebcb7f088228285e798b750cf8f # v4.2.1
         with:
           key: "${{ matrix.arm_gcc_install_base }}/${{ matrix.installer_name }}"
           path: ${{ matrix.installer_name }}
@@ -388,7 +388,7 @@ jobs:
           unzip -o $Env:installer_name
 
       - name: Cache CMSIS Pack
-        uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57 # v4.2.0
+        uses: actions/cache@0c907a75c2c80ebcb7f088228285e798b750cf8f # v4.2.1
         env:
           CACHE_NAME: cmsis_pack
         with:
@@ -514,7 +514,7 @@ jobs:
         run: mkdir build
 
       - name: Cache ARM GCC
-        uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57 # v4.2.0
+        uses: actions/cache@0c907a75c2c80ebcb7f088228285e798b750cf8f # v4.2.1
         with:
           key: "${{ env.arm_gcc_install_base }}/${{ env.installer_name }}"
           path: ${{ env.installer_name }}
@@ -525,7 +525,7 @@ jobs:
           tar -xvf ${{ env.installer_name }}
 
       - name: Cache CMSIS Pack
-        uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57 # v4.2.0
+        uses: actions/cache@0c907a75c2c80ebcb7f088228285e798b750cf8f # v4.2.1
         env:
           CACHE_NAME: cmsis_pack
         with: