[chore] fixes intendation issues in yaml file (#9668)

fixes the intendation issue at:
https://github.com/open-telemetry/opentelemetry-collector/blob/main/.github/workflows/prepare-release.yml

**Description:** <Describe what has changed.>
Refer -
#9409 (comment)

.github/workflows/prepare-release.yml

@@ -24,29 +24,30 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-     - name: Validate version format
-      run: |
-        validate_beta_version() {
-          local regex_pattern_beta='^[0-9]+\.[0-9]+\.[0-9]+$'
-          if [[ ! "$1" =~ $regex_pattern_beta ]]; then
-            echo "Invalid $2 version format. For beta, it can be 0.1.0 or higher"
-            exit 1
-          fi
-        }
+      - name: Validate version format
+        run: |
+          validate_beta_version() {
+            local regex_pattern_beta='^[0-9]+\.[0-9]+\.[0-9]+$'
+            if [[ ! "$1" =~ $regex_pattern_beta ]]; then
+              echo "Invalid $2 version format. For beta, it can be 0.1.0 or higher"
+              exit 1
+            fi
+          }
 
-        validate_stable_version() {
-          local regex_pattern_stable='^[1-9][0-9]*\.[0-9]+\.[0-9]+$'
-          if [[ ! "$1" =~ $regex_pattern_stable ]]; then
-            echo "Invalid stable version format for $2. Major version must be greater than 1."
-            exit 1
-          fi
-        }
+          validate_stable_version() {
+            local regex_pattern_stable='^[1-9][0-9]*\.[0-9]+\.[0-9]+$'
+            if [[ ! "$1" =~ $regex_pattern_stable ]]; then
+              echo "Invalid stable version format for $2. Major version must be greater than 1."
+              exit 1
+            fi
+          }
+
+          validate_beta_version "${{ inputs.candidate-beta }}" "candidate-beta"
+          validate_beta_version "${{ inputs.current-beta }}" "current-beta"
+          validate_stable_version "${{ inputs.candidate-stable }}" "candidate-stable"
+          validate_stable_version "${{ inputs.current-stable }}" "current-stable"
+        shell: bash
 
-        validate_beta_version "${{ inputs.candidate-beta }}" "candidate-beta"
-        validate_beta_version "${{ inputs.current-beta }}" "current-beta"
-        validate_stable_version "${{ inputs.candidate-stable }}" "candidate-stable"
-        validate_stable_version "${{ inputs.current-stable }}" "current-stable"
-      shell: bash
   # Releasing opentelemetry-collector
   prepare-release:
     needs: