Bump version to 0.8.0-SNAPSHOT, 0.7.6 in samples (#380)

## Motivation and Context
Prepare for the subsequent development iteration

## 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)
- [ ] Documentation update
- [x] Dependency 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
<!-- Add any other context, implementation notes, or design decisions
-->

Author: kpavlov

gradle.properties

@@ -14,4 +14,4 @@ kotlin.mpp.enableCInteropCommonization=true
 kotlin.native.ignoreDisabledTargets=true
 
 group=io.modelcontextprotocol
-version=0.7.6
+version=0.8.0-SNAPSHOT

samples/kotlin-mcp-client/gradle/libs.versions.toml

@@ -2,7 +2,7 @@
 anthropic = "2.9.0"
 kotlin = "2.2.21"
 ktor = "3.2.3"
-mcp-kotlin = "0.7.5"
+mcp-kotlin = "0.7.6"
 shadow = "9.2.2"
 slf4j = "2.0.17"
 

samples/kotlin-mcp-server/gradle/libs.versions.toml

@@ -1,7 +1,7 @@
 [versions]
 kotlin = "2.2.21"
 ktor = "3.2.3"
-mcp-kotlin = "0.7.5"
+mcp-kotlin = "0.7.6"
 slf4j = "2.0.17"
 shadow = "9.2.2"
 

samples/weather-stdio-server/gradle/libs.versions.toml

@@ -4,7 +4,7 @@ coroutines = "1.10.2"
 kotlin = "2.2.21"
 ktor = "3.2.3"
 logging = "7.0.13"
-mcp-kotlin = "0.7.5"
+mcp-kotlin = "0.7.6"
 shadow = "9.2.2"
 slf4j = "2.0.17"