Remove default Java installs so they are not used

This installs openjdk-17-jdk as the only system JDK so that if
maven subcommands fall back on the system they can still run JRuby
build for 17+. It should only get used in that case.

See actions/setup-java#701

.github/workflows/ci.yml

@@ -24,6 +24,8 @@ jobs:
     steps:
       - name: checkout
         uses: actions/checkout@v3
+      - name: remove default java except 17
+        run: sudo apt remove temurin-8-jdk temurin-11-jdk temurin-21-jdk
       - name: set up java ${{ matrix.java-version }}
         uses: actions/setup-java@v3
         with:
@@ -50,6 +52,8 @@ jobs:
     steps:
       - name: checkout
         uses: actions/checkout@v3
+      - name: remove default java except 17
+        run: sudo apt remove temurin-8-jdk temurin-11-jdk temurin-21-jdk
       - name: set up java 17
         uses: actions/setup-java@v3
         with:
@@ -75,6 +79,8 @@ jobs:
     steps:
       - name: checkout
         uses: actions/checkout@v3
+      - name: remove default java except 17
+        run: sudo apt remove temurin-8-jdk temurin-11-jdk temurin-21-jdk
       - name: set up java 17
         uses: actions/setup-java@v3
         with:
@@ -105,6 +111,8 @@ jobs:
     steps:
       - name: checkout
         uses: actions/checkout@v3
+      - name: remove default java except 17
+        run: sudo apt remove temurin-8-jdk temurin-11-jdk temurin-21-jdk
       - name: set up java ${{ matrix.java-version }}
         uses: actions/setup-java@v3
         with:
@@ -132,6 +140,8 @@ jobs:
     steps:
       - name: checkout
         uses: actions/checkout@v3
+      - name: remove default java except 17
+        run: sudo apt remove temurin-8-jdk temurin-11-jdk temurin-21-jdk
       - name: set up java ${{ matrix.java-version }}
         uses: actions/setup-java@v3
         with:
@@ -162,6 +172,8 @@ jobs:
     steps:
       - name: checkout
         uses: actions/checkout@v3
+      - name: remove default java except 17
+        run: sudo apt remove temurin-8-jdk temurin-11-jdk temurin-21-jdk
       - name: set up java ${{ matrix.java-version }}
         uses: actions/setup-java@v3
         with:
@@ -189,6 +201,8 @@ jobs:
     steps:
       - name: checkout
         uses: actions/checkout@v3
+      - name: remove default java except 17
+        run: sudo apt remove temurin-8-jdk temurin-11-jdk temurin-21-jdk
       - name: set up java 17
         uses: actions/setup-java@v3
         with:
@@ -217,6 +231,8 @@ jobs:
     steps:
       - name: checkout
         uses: actions/checkout@v3
+      - name: remove default java except 17
+        run: sudo apt remove temurin-8-jdk temurin-11-jdk temurin-21-jdk
       - name: set up java 17
         uses: actions/setup-java@v3
         with:
@@ -242,6 +258,8 @@ jobs:
     steps:
       - name: checkout
         uses: actions/checkout@v3
+      - name: remove default java except 17
+        run: sudo apt remove temurin-8-jdk temurin-11-jdk temurin-21-jdk
       - name: set up java 17
         uses: actions/setup-java@v3
         with:
@@ -263,6 +281,8 @@ jobs:
     steps:
       - name: checkout
         uses: actions/checkout@v3
+      - name: remove default java except 17
+        run: sudo apt remove temurin-8-jdk temurin-11-jdk temurin-21-jdk
       - name: set up java 17
         uses: actions/setup-java@v3
         with:
@@ -298,7 +318,9 @@ jobs:
     steps:
       - name: checkout
         uses: actions/checkout@v3
-      - name: set up java
+      - name: remove default java except 17
+        run: sudo apt remove temurin-8-jdk temurin-11-jdk temurin-21-jdk
+      - name: set up java 17
         uses: actions/setup-java@v3
         with:
           distribution: 'temurin'
@@ -320,6 +342,8 @@ jobs:
     steps:
       - name: checkout
         uses: actions/checkout@v3
+      - name: remove default java except 17
+        run: sudo apt remove temurin-8-jdk temurin-11-jdk temurin-21-jdk
       - name: set up java 17
         uses: actions/setup-java@v3
         with:
@@ -396,6 +420,8 @@ jobs:
     steps:
       - name: checkout
         uses: actions/checkout@v3
+      - name: remove default java except 17
+        run: sudo apt remove temurin-8-jdk temurin-11-jdk temurin-21-jdk
       - name: set up java ${{ matrix.java-version }}
         uses: actions/setup-java@v3
         with:
@@ -424,6 +450,8 @@ jobs:
     steps:
       - name: checkout
         uses: actions/checkout@v3
+      - name: remove default java except 17
+        run: sudo apt remove temurin-8-jdk temurin-11-jdk temurin-21-jdk
       - name: set up java 17
         uses: actions/setup-java@v3
         with: