timeout 15m for all GHA jobs

Author: yegor256

.github/workflows/codecov.yml

@@ -6,6 +6,7 @@ name: codecov
       - master
 jobs:
   codecov:
+    timeout-minutes: 15
     runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4

.github/workflows/mvn.yml

@@ -9,6 +9,7 @@ name: mvn
       - master
 jobs:
   mvn:
+    timeout-minutes: 15
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:

.github/workflows/pdd.yml

@@ -9,6 +9,7 @@ name: pdd
       - master
 jobs:
   pdd:
+    timeout-minutes: 15
     runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4

.github/workflows/xcop.yml

@@ -9,6 +9,7 @@ name: xcop
       - master
 jobs:
   xcop:
+    timeout-minutes: 15
     runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4