Update badges in README and set version to 0.7.4-SNAPSHOT (#326)

Update badges in README and set version to 0.7.4-SNAPSHOT

Not updating the version of sample projects because of #302 

## Motivation and Context
<!-- Why is this change needed? What problem does it solve? -->

## How Has This Been Tested?
<!-- Have you tested this in a real application? Which scenarios were
tested? -->

## Breaking Changes
<!-- Will users need to update their code or configurations? -->

## Types of changes
<!-- What types of changes does your code introduce? Put an `x` in all
the boxes that apply: -->
- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [x] Documentation update

## Checklist
<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->
- [x] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [x] My code follows the repository's style guidelines
- [x] New and existing tests pass locally
- [ ] I have added appropriate error handling
- [ ] I have added or updated documentation as needed

## Additional context
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-->

.github/workflows/build.yml

@@ -36,8 +36,12 @@ jobs:
 
       - name: Build with Gradle
         run: |-
-          ./gradlew --no-daemon clean ktlintCheck build koverLog koverHtmlReport
-          ./gradlew --no-daemon :kotlin-sdk-core:publishToMavenLocal :kotlin-sdk-client:publishToMavenLocal :kotlin-sdk-server:publishToMavenLocal
+          ./gradlew --no-daemon --rerun-tasks \
+            clean \
+            ktlintCheck \
+            build \
+            koverLog koverHtmlReport \
+            publishToMavenLocal
 
       - name: Build Kotlin-MCP-Client Sample
         working-directory: ./samples/kotlin-mcp-client