chore: upgrade cocoapods (#506)

Upgrade cocoapods to 1.12.1 (watchos build fails with 1.11.3) in gitbub actions

Author: jaeopt

.github/workflows/swift.yml

@@ -65,7 +65,7 @@ jobs:
         BRANCH: ${{ github.ref_name }}
         GITHUB_USER: optibot
         GITHUB_TOKEN: ${{ secrets.CI_USER_TOKEN }}
-        COCOAPODS_VERSION: '1.11.3'
+        COCOAPODS_VERSION: '1.12.1'
       run: |
         gem install cocoapods -v $COCOAPODS_VERSION
         Scripts/run_prep.sh
@@ -88,7 +88,7 @@ jobs:
         BRANCH: ${{ github.ref_name }}
         GITHUB_TOKEN: ${{ secrets.CI_USER_TOKEN }}
         COCOAPODS_TRUNK_TOKEN: ${{ secrets.COCOAPODS_TRUNK_TOKEN }}
-        COCOAPODS_VERSION: '1.11.3'
+        COCOAPODS_VERSION: '1.12.1'
       run: |
         gem install cocoapods -v $COCOAPODS_VERSION
         Scripts/run_release.sh