fix: rename update_lint param to update_cfn_lint

Rename the `update_lint` input parameter to `update_cfn_lint`, making
explicit that we're updating the CloudFormation Linter, as opposed to
some other linter.

Associated issue: #82

.github/workflows/main.yaml

@@ -104,7 +104,7 @@ jobs:
         with:
           commands: test run --project-root ./e2e/resources/default
           update_taskcat: true
-          update_lint: true
+          update_cfn_lint: true
 
   vale:
     name: Run Vale

action.yaml

@@ -22,7 +22,7 @@ inputs:
       If set to "true", this action will update taskcat its the latest version
       before running tests.
     required: false
-  update_lint:
+  update_cfn_lint:
     description: |
       If set to "true", this action will update cfn-lit to its latest version
       before running tests.

entrypoint.sh

@@ -4,7 +4,7 @@ if [ "${INPUT_UPDATE_TASKCAT}" == "true" ]; then
     pip install --upgrade taskcat
 fi
 
-if [ "${INPUT_UPDATE_LINT}" == "true" ]; then
+if [ "${INPUT_UPDATE_CFN_LINT}" == "true" ]; then
     pip install --upgrade cfn-lint
 fi