update github actions versions

Author: ekatrukha

.github/workflows/build-main.yml

@@ -14,7 +14,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Set up Java
-        uses: actions/setup-java@v2
+        uses: actions/setup-java@v3
         with:
           java-version: '8'
           distribution: 'zulu'

.github/workflows/build-pr.yml

@@ -12,7 +12,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Set up Java
-        uses: actions/setup-java@v2
+        uses: actions/setup-java@v3
         with:
           java-version: '8'
           distribution: 'zulu'

.gitignore

@@ -1,2 +1,6 @@
 target
 /target/
+.classpath
+.project
+.settings/
+.factorypath