Remove git-crypt installation from action steps

The installation of git-crypt is removed from the composite steps within 'runs' in our action.yml file. This change indicates that git-crypt is expected to be pre-installed in the environment where this action is running.

.github/dependabot.yml

@@ -0,0 +1,11 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "00:00"
+    groups:
+      all-actions:
+        patterns: [ "*" ]

action.yml

@@ -9,12 +9,6 @@ inputs:
 runs:
   using: "composite"
   steps:
-    - name: Install git-crypt
-      run: |
-        sudo apt-get update
-        sudo apt-get install -y git-crypt
-      shell: bash
-
     - run: |
         echo "${{ inputs.git_crypt_key }}" | base64 -d > /tmp/data.key
         git-crypt unlock /tmp/data.key