ci: update release signing key source and native build runners

Point the Maven Central release workflows at the dedicated GPG signing
key secret, and run the RIC native builds on the self-hosted release
runners instead of the default hosted runners.

Author: fabisev

.github/workflows/release-runtime-interface-client.yml

@@ -49,10 +49,10 @@ jobs:
       matrix:
         include:
           - arch: x86_64
-            runner: ubuntu-latest
+            runner: codebuild-aws-lambda-java-libs-test-trigger-x86-${{ github.run_id }}-${{ github.run_attempt }}
             profiles: linux-x86_64 linux_musl-x86_64
           - arch: aarch64
-            runner: ubuntu-24.04-arm
+            runner: codebuild-aws-lambda-java-libs-test-trigger-arm64-${{ github.run_id }}-${{ github.run_attempt }}
             profiles: linux-aarch64 linux_musl-aarch64
     runs-on: ${{ matrix.runner }}
     timeout-minutes: 45
@@ -216,7 +216,7 @@ jobs:
           trap 'rm -rf "$MAVEN_SETTINGS" "$GNUPGHOME"' EXIT
 
           # --- Signing key + Sonatype token (shared secrets from LambdaMavenDeploy) ---
-          GPG_JSON=$(aws secretsmanager get-secret-value --secret-id maven.gpg.keys --query SecretString --output text)
+          GPG_JSON=$(aws secretsmanager get-secret-value --secret-id lambda-runtimes/java/gpg-signing-key --query SecretString --output text)
           CREDS_JSON=$(aws secretsmanager get-secret-value --secret-id maven.sonatype.creds --query SecretString --output text)
           GPG_PRIVATE_KEY=$(jq -r '.private' <<< "$GPG_JSON")
           GPG_PASSPHRASE=$(jq -r '.passphrase' <<< "$GPG_JSON")

.github/workflows/release.yml

@@ -183,7 +183,7 @@ jobs:
           trap 'rm -rf "$MAVEN_SETTINGS" "$GNUPGHOME"' EXIT
 
           # --- Signing key + Sonatype token (shared secrets from LambdaMavenDeploy) ---
-          GPG_JSON=$(aws secretsmanager get-secret-value --secret-id maven.gpg.keys --query SecretString --output text)
+          GPG_JSON=$(aws secretsmanager get-secret-value --secret-id lambda-runtimes/java/gpg-signing-key --query SecretString --output text)
           CREDS_JSON=$(aws secretsmanager get-secret-value --secret-id maven.sonatype.creds --query SecretString --output text)
           GPG_PRIVATE_KEY=$(jq -r '.private' <<< "$GPG_JSON")
           GPG_PASSPHRASE=$(jq -r '.passphrase' <<< "$GPG_JSON")